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The Golden Gate Bridge uses 80,000 miles of wire in its cables.
over US ROUTE 67
S BELTLINE ALTON
Parametric wireframe generated from real NBI dimensions. Drag to rotate, scroll to zoom.
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This bridge has a Poor overall condition rating of 4 out of 9. This bridge is classified as being in poor condition, meaning one or more structural components have significant deterioration. Poor condition does not mean the bridge is unsafe to drive on, but it does mean repairs or replacement may be needed.
The bridge carries 5,750 vehicles per day and is 65 years old (reconstructed in 1991).
Its sufficiency rating of 47.9 places it below the national average of 63.6.
For travelers with bridge anxiety
This bridge is likely to be a comfortable crossing for most travelers.
This bridge is 115 feet long — a quick crossing, under 5 seconds at highway speed.
A standard overpass design with solid barriers on each side.
No height data available — likely a standard overpass height.
About 5,750 vehicles cross daily — light traffic, a smooth crossing.
The deck is 56 feet wide with 3-4 lanes — standard 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
1961
65 years old (rebuilt 1991)
Structure Type
Steel Stringer/Multi-beam/Girder
Total Length
115 ft
35.1 m
Deck Width
56 ft
17.1 m
Spans
3
sections between supports
Max Span
41 ft
longest unsupported section (12.5 m)
Traffic Lanes
4 lanes
Two-way traffic
Daily Traffic
5,750vehicles/day
38.92152°N, 90.17981°W
Steel Stringer/Multi-beam/Girder
A steel stringer bridge uses parallel steel beams (stringers) to support the deck. This is one of the most common bridge types in the US, valued for its simplicity and strength.
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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.