Loading structural data... this is riveting stuff.
Loading structural data... this is riveting stuff.
Loading 624,191 bridges... give or take a few.
over BLACKFOOT RIVER
5M W POTOMAC
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 2,314 vehicles per day and is 86 years old (reconstructed in 1991).
Its sufficiency rating of 62.3 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 446 feet long — a short crossing, about 10-15 seconds.
A truss bridge — the steel framework can provide a sense of enclosure.
No height data available — likely a standard overpass height.
About 2,314 vehicles cross daily — light traffic, a smooth crossing.
The deck is 25 feet wide with 1-2 lanes — a narrower crossing.
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
1940
86 years old (rebuilt 1991)
Structure Type
Steel (Continuous) Truss (Deck)
Total Length
446 ft
135.9 m
Deck Width
25 ft
7.5 m
Spans
3
sections between supports
Max Span
150 ft
longest unsupported section (45.7 m)
Traffic Lanes
1 lane
One-way traffic
Daily Traffic
2,314vehicles/day
46.91058°N, 113.67567°W
Steel (Continuous) Truss (Deck)
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 Montana 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.