Tr 42 (th-s-17) over Thenius Creek

Marshall County, Illinois · rated Good in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

• Tr 42 (th-s-17) over Thenius Creek in Marshall County, Illinois, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
• Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
• It was built in 1983, making it 42 years old at the 2025 inventory.
• It carries about 25 vehicles a day (traffic count year 2024).
• Its listed owner is a town or township highway agency.
• It is one of 65 of the 155 inventoried bridges in Marshall County rated good (41.9%); 19 (12.3%) are rated poor.
• A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

View this bridge on a map → (41.04607, -89.44274)

Component ratings

Bridge details

Source: FHWA National Bridge Inventory, 2025 data as reported by the Illinois department of transportation.

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