Crunching the numbers on America's infrastructure...
Crunching the numbers on America's infrastructure...
The Golden Gate Bridge uses 80,000 miles of wire in its cables.
over MILL CK. AT & SF. R.R.
5.4W OF I-35
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 21,137 vehicles per day and is 41 years old.
Its sufficiency rating of 61.5 places it below the national average of 63.6.
The NBI records a navigation clearance of 26 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 740 feet long — a moderate crossing, about 30 seconds.
A standard overpass design with solid barriers on each side.
About 26 feet above ground — moderate height, similar to a 3-5 story building.
About 21,137 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 56 feet wide with 3-4 lanes — standard 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
1985
41 years old
Structure Type
Prestressed Concrete (Continuous) Stringer/Multi-beam/Girder
Total Length
740 ft
225.6 m
Deck Width
56 ft
17.1 m
Spans
9
sections between supports
Max Span
88 ft
longest unsupported section (26.7 m)
Traffic Lanes
4 lanes
Two-way traffic
Clearance Below
26 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
21,137vehicles/day
38.97374°N, 94.81827°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.