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Why did the truss bridge break up with the beam bridge? It needed more support.
over COMMERCIAL ST. & NINE MI
COMMERCIAL STREET 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 65,232 vehicles per day and is 76 years old (reconstructed in 2007).
Its sufficiency rating of 67.4 is above the national average of 63.6.
The NBI records a navigation clearance of 30 feet — the minimum vertical space below the bridge deck. The total height of the bridge structure (including towers, railings, and superstructure) may be higher.
For travelers with bridge anxiety
This bridge has some features that may be challenging for travelers with bridge anxiety. See the tips below for a more comfortable crossing.
This bridge is 863 feet long — a moderate crossing, about 30 seconds.
An arch bridge design with some openness to the surroundings.
About 30 feet above ground — moderate height, similar to a 3-5 story building.
About 65,232 vehicles cross daily — heavy traffic, congestion likely during rush hours.
The deck is 75 feet wide with multiple lanes — easy to stay in a center lane.
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
1950
76 years old (rebuilt 2007)
Structure Type
Concrete Arch (Deck)
Total Length
863 ft
263.0 m
Deck Width
75 ft
23.0 m
Spans
3
sections between supports
Max Span
176 ft
longest unsupported section (53.6 m)
Traffic Lanes
2 lanes
Two-way traffic
Clearance Below
30 ft
navigation clearance under deck
Clearance height compared to familiar objects
Height shown is the navigation clearance below the bridge deck. The total height of the bridge structure (including towers and superstructure) may be higher.
Daily Traffic
65,232vehicles/day
40.42556°N, 79.90508°W
Concrete Arch (Deck)
A concrete arch bridge uses a curved concrete structure to transfer loads through compression. Concrete arches are durable and can be very aesthetically pleasing.
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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.