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Why did the truss bridge break up with the beam bridge? It needed more support.
over JONES FALLS & UNION AVE
I-83 OVER JF & UNION AVE
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 95,051 vehicles per day and is 67 years old (reconstructed in 1987).
Its sufficiency rating of 63.3 places it below the national average of 63.6.
The NBI records a navigation clearance of 14 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 1845 feet long — a longer crossing, over 1 minute.
A standard overpass design with solid barriers on each side.
About 14 feet above ground — standard overpass height.
About 95,051 vehicles cross daily — heavy traffic, congestion likely during rush hours.
The deck is 112 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
1959
67 years old (rebuilt 1987)
Structure Type
Concrete (Continuous) Slab
Total Length
1,845 ft
562.4 m
Deck Width
112 ft
34.2 m
Spans
33
sections between supports
Max Span
64 ft
longest unsupported section (19.5 m)
Traffic Lanes
6 lanes
Two-way traffic
Clearance Below
14 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
95,051vehicles/day
39.33422°N, 76.64436°W
Concrete (Continuous) Slab
A concrete slab bridge is a simple, solid concrete deck that acts as both the structural support and driving surface. Common for short spans, they are durable and low-maintenance.
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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.