Fetching data from the National Bridge Inventory...
Fetching data from the National Bridge Inventory...
Fetching data from the National Bridge Inventory...
over MONONGAHELA RIVER CSX RR
Smithfield 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 7,417 vehicles per day and is 143 years old (reconstructed in 2024).
Its sufficiency rating of 43.0 places it below the national average of 63.6.
The NBI records a navigation clearance of 13 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 may cause some awareness for travelers with bridge anxiety, but has manageable characteristics.
This bridge is 1182 feet long — a moderate crossing, about 30 seconds.
A truss bridge — the steel framework can provide a sense of enclosure.
About 13 feet above ground — standard overpass height.
About 7,417 vehicles cross daily — light traffic, a smooth crossing.
The deck is 46 feet wide with 2-3 lanes — moderate 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
1883
143 years old (rebuilt 2024)
Structure Type
Steel Truss (Thru)
Total Length
1,182 ft
360.3 m
Deck Width
46 ft
14.1 m
Spans
2
sections between supports
Max Span
360 ft
longest unsupported section (109.7 m)
Traffic Lanes
3 lanes
Two-way traffic
Clearance Below
13 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
7,417vehicles/day
40.43475°N, 80.00213°W
Steel Truss (Thru)
A steel truss bridge uses a framework of interconnected triangular elements. The geometric rigidity of triangles makes this design extremely efficient at distributing loads.
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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.