Traffic interchange

Details Traffic interchange Traffic interchange

1997-06-25

1999-07-13

Will, Thomas B.

Road structure, process, or apparatus

Road system

E01C 100

Patent

active

059217014

ABSTRACT:
An interchange for improving vehicular traffic flow through an intersection of surface streets includes a cross-shaped bridge supported over the intersection at a height to allow through traffic to proceed underneath. Crossed arms of the bridge are mutually aligned with the intersecting surface streets and carry four turning lanes each having an entrance end on one arm and an exit end on an adjacent arm for turning traffic arriving at the entrance end through a center-turning 90.degree. curve before leaving the exit end. Four up-ramps, one aligned with the entrance end of each turning lane, convey onto the bridge left-turning traffic from a respective surface street, and four down-ramps, one aligned with the exit end of each turning lane and located adjacent to an up-ramp, convey traffic proceeding along a turning lane back to ground level for merging with surface street through traffic proceeding through the intersection.

REFERENCES:
patent: 1515251 (1924-11-01), Graves
patent: 1543080 (1925-06-01), Graves
patent: 4592673 (1986-06-01), Lee
"Overhead Turnway," Architectural Forum, p. 48, Jul. 1946.

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