Gathering condition ratings from coast to coast...
Gathering condition ratings from coast to coast...
What did one bridge say to the other? 'You're looking a bit stressed.'
over LOWER LVL WACKER DR
MICHIGAN TO RANDOLPH
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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 11,200 vehicles per day and is 100 years old (reconstructed in 2002).
Its sufficiency rating of 67.8 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 4095 feet long — an extended crossing, several minutes.
A standard overpass design with solid barriers on each side.
About 12 feet above ground — standard overpass height.
About 11,200 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 114 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
1926
100 years old (rebuilt 2002)
Structure Type
Prestressed Concrete Slab
Total Length
4,095 ft
1248.2 m
Deck Width
114 ft
34.7 m
Spans
99
sections between supports
Max Span
44 ft
longest unsupported section (13.4 m)
Traffic Lanes
6 lanes
Two-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
11,200vehicles/day
41.88821°N, 87.62459°W
Prestressed Concrete Slab
A prestressed concrete slab bridge uses a flat concrete deck that has been pretensioned for additional strength. Efficient for short to medium spans.
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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.