Fun fact: Covered bridges were roofed to protect the wood, not the travelers.
Fun fact: Covered bridges were roofed to protect the wood, not the travelers.
Fetching data from the National Bridge Inventory...
over KISHWAUKEE RIVER
0.75 MI S BLKHAWK RD
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 6 out of 9. While it is not classified as structurally deficient, it shows some deterioration that is being monitored.
The bridge carries 14,500 vehicles per day and is 46 years old (reconstructed in 2008).
Its sufficiency rating of 68.4 is above the national average of 63.6.
For travelers with bridge anxiety
This bridge may cause some awareness for travelers with bridge anxiety, but has manageable characteristics.
This bridge is 1170 feet long — a moderate crossing, about 30 seconds.
A standard bridge design.
No height data available — likely a standard overpass height.
About 14,500 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 42 feet wide with 2-3 lanes — moderate width.
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
1980
46 years old (rebuilt 2008)
Structure Type
Prestressed Concrete Segmental Box Girder
Total Length
1,170 ft
356.6 m
Deck Width
42 ft
12.8 m
Spans
5
sections between supports
Max Span
250 ft
longest unsupported section (76.2 m)
Traffic Lanes
2 lanes
One-way traffic
Daily Traffic
14,500vehicles/day
42.18108°N, 89.02361°W
Prestressed Concrete Segmental Box Girder
A prestressed concrete box beam bridge combines hollow box sections with prestressing technology, enabling longer spans with reduced weight and material usage.
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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.