Why did the truss bridge break up with the beam bridge? It needed more support.
Why did the truss bridge break up with the beam bridge? It needed more support.
Fun fact: Covered bridges were roofed to protect the wood, not the travelers.
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Fort Duquesne Bridge
Parametric wireframe generated from real NBI dimensions. Drag to rotate, scroll to zoom.
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This bridge has a Fair overall condition rating of 5 out of 9. While it is not classified as structurally deficient, it shows some deterioration that is being monitored.
The bridge carries 20,246 vehicles per day and is 67 years old.
Its sufficiency rating of 59.4 places it below the national average of 63.6.
For travelers with bridge anxiety
This bridge may cause some awareness for travelers with bridge anxiety, but has manageable characteristics.
This bridge is 921 feet long — a moderate crossing, about 30 seconds.
An arch bridge design with some openness to the surroundings.
No height data available — likely a standard overpass height.
About 20,246 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 57 feet wide with 3-4 lanes — standard width.
This bridge crosses over water. Focus on the road ahead — the water is far below.
This comfort score is designed to help individuals with bridge anxiety plan their travel. All bridges in the National Bridge Inventory are regularly inspected and deemed safe for travel. This is not medical advice — if you experience severe anxiety, please consult a healthcare professional.
Year Built
1959
67 years old
Structure Type
Steel Arch (Thru)
Total Length
921 ft
280.7 m
Deck Width
57 ft
17.4 m
Spans
1
sections between supports
Max Span
423 ft
longest unsupported section (128.9 m)
Traffic Lanes
4 lanes
One-way traffic
Daily Traffic
20,246vehicles/day
40.44417°N, 80.00913°W
Steel Arch (Thru)
A steel arch bridge uses a curved steel structure to carry loads primarily through compression. These bridges are known for their elegant appearance and structural efficiency.
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Data from the National Bridge Inventory (NBI), maintained by the Federal Highway Administration (FHWA).
Data year: 2025. Conditions may have changed since the last inspection.
This information is provided for educational and informational purposes only. It should not be used as the sole basis for any decisions related to bridge safety or transportation planning. Always consult official sources and local authorities for the most current data.