Crunching the numbers on America's infrastructure...
Crunching the numbers on America's infrastructure...
Loading structural data... this is riveting stuff.
over 736 EXT 3 RRS MON.RIV.
Duquesne-McKeesport Brg
Parametric wireframe generated from real NBI dimensions. Drag to rotate, scroll to zoom.
Loading 3D model...
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 26,495 vehicles per day and is 99 years old (reconstructed in 1988).
Its sufficiency rating of 44.3 places it below the national average of 63.6.
The NBI records a navigation clearance of 226 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 2252 feet long — a longer crossing, over 1 minute.
A truss bridge — the steel framework can provide a sense of enclosure.
About 226 feet above ground — a very high bridge with panoramic views.
About 26,495 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 42 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
1927
99 years old (rebuilt 1988)
Structure Type
Steel Truss (Thru)
Total Length
2,252 ft
686.4 m
Deck Width
42 ft
12.8 m
Spans
8
sections between supports
Max Span
382 ft
longest unsupported section (116.4 m)
Traffic Lanes
2 lanes
Two-way traffic
Clearance Below
226 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
26,495vehicles/day
40.35751°N, 79.84396°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.
Learn more about this bridge typeNo ratings yet. Be the first to rate this bridge!
Sign in and track Pennsylvania to receive alerts when new inspection data is published. Premium members get bridge-specific notifications.
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.