Wow, there are a lot of bridges here... one second please.
Wow, there are a lot of bridges here... one second please.
A bridge's favorite type of music? Heavy metal. Or suspension... it depends.
over I-83 CSX MTA AMTRAK
0.2 MI N MOUNT ROYAL 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 27,982 vehicles per day and is 88 years old (reconstructed in 1981).
Its sufficiency rating of 56.3 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 979 feet long — a moderate crossing, about 30 seconds.
An arch bridge design with some openness to the surroundings.
About 14 feet above ground — standard overpass height.
About 27,982 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 71 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
1938
88 years old (rebuilt 1981)
Structure Type
Steel Arch (Thru)
Total Length
979 ft
298.4 m
Deck Width
71 ft
21.6 m
Spans
2
sections between supports
Max Span
271 ft
longest unsupported section (82.6 m)
Traffic Lanes
5 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
27,982vehicles/day
39.30817°N, 76.62054°W
Steel Arch (Thru)
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.