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Did you know? The oldest bridge in the NBI was built in 1697.
over SOUTH FOREST ROAD
08-SBD-015-R23.47R
Parametric wireframe generated from real NBI dimensions. Drag to rotate, scroll to zoom.
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This bridge has a Good overall condition rating of 7 out of 9. It is in good structural condition and is not classified as structurally deficient.
The bridge carries 81,000 vehicles per day and is 57 years old.
Its sufficiency rating of 76.4 is above the national average of 63.6.
The NBI records a navigation clearance of 12 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 20 feet long — a quick crossing, under 5 seconds at highway speed.
An arch bridge design with some openness to the surroundings.
About 12 feet above ground — standard overpass height.
About 81,000 vehicles cross daily — heavy traffic, congestion likely during rush hours.
The deck is 106 feet wide with multiple lanes — easy to stay in a center lane.
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
1969
57 years old
Structure Type
Steel Arch (Deck)
Total Length
20 ft
6.1 m
Deck Width
106 ft
32.3 m
Spans
1
sections between supports
Max Span
18 ft
longest unsupported section (5.6 m)
Traffic Lanes
5 lanes
One-way traffic
Clearance Below
12 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
81,000vehicles/day
34.33890°N, 117.47758°W
Steel Arch (Deck)
A steel arch bridge uses a curved steel structure to carry loads primarily through compression. These bridges are known for their elegant appearance and structural efficiency.
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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.