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Did you know? The oldest bridge in the NBI was built in 1697.
over LOWER LEVEL ROADWAY
BWI AIRPORT
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 12,589 vehicles per day and is 49 years old (reconstructed in 1988).
Its sufficiency rating of 53.8 places it below the national average of 63.6.
The NBI records a navigation clearance of 13 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 1055 feet long — a moderate crossing, about 30 seconds.
A standard overpass design with solid barriers on each side.
About 13 feet above ground — standard overpass height.
About 12,589 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 66 feet wide with multiple lanes — easy to stay in a center lane.
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
1977
49 years old (rebuilt 1988)
Structure Type
Concrete (Continuous) Slab
Total Length
1,055 ft
321.6 m
Deck Width
66 ft
20.1 m
Spans
58
sections between supports
Max Span
40 ft
longest unsupported section (12.2 m)
Traffic Lanes
2 lanes
One-way traffic
Clearance Below
13 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
12,589vehicles/day
39.17983°N, 76.67055°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.