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Connecting the data points... literally.
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over BN RAILROAD SEPARATION
6 WEST OF ND 30
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 3,150 vehicles per day and is 68 years old (reconstructed in 1987).
Its sufficiency rating of 57.6 places it below the national average of 63.6.
The NBI records a navigation clearance of 35 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 242 feet long — a short crossing, about 10-15 seconds.
A standard overpass design with solid barriers on each side.
About 35 feet above ground — moderate height, similar to a 3-5 story building.
About 3,150 vehicles cross daily — light traffic, a smooth crossing.
The deck is 45 feet wide with 2-3 lanes — moderate width.
This bridge crosses over land, not water — no water views 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
1958
68 years old (rebuilt 1987)
Structure Type
Prestressed Concrete (Continuous) Stringer/Multi-beam/Girder
Total Length
242 ft
73.8 m
Deck Width
45 ft
13.7 m
Spans
4
sections between supports
Max Span
62 ft
longest unsupported section (18.9 m)
Traffic Lanes
2 lanes
One-way traffic
Clearance Below
35 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
3,150vehicles/day
46.87611°N, 99.46679°W
Prestressed Concrete (Continuous) Stringer/Multi-beam/Girder
A prestressed concrete stringer bridge uses pretensioned concrete beams, where steel tendons are stretched before concrete is poured. This creates stronger, lighter spans.
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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.