Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Route 1 Extension, Southbound Viaduct, Spanning Conrail Yards, Wilson ...
Significance: This viaduct is part of the Route 1 Extension, an early example of planned, limited access, road construction built to carry high speed automobile and heavy commercial traffic. Designed and const... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More