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Tr 145 S. Fork Rd over South Fork

Monroe County, Illinois · rated Poor in the 2025 National Bridge Inventory

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

Tr 145 S. Fork Rd over South Fork in Monroe County, Illinois, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
It was built in 1988, making it 37 years old at the 2025 inventory.
It carries about 75 vehicles a day (traffic count year 2024).
Its listed owner is a town or township highway agency.
It is one of 11 of the 132 inventoried bridges in Monroe County rated poor (8.3%); 11 (8.3%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings


Structure	Prestressed concrete multiple box beam
Length	about 91 ft
Location	Sec 15 Rd Dist 4
NBI structure number	067313400000000
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
IL3NB->255WB Rmp E over 255SB->IL3SB Ramp B	1982	36,900	Fair
Il 3 SB over Palmer Rd/Palmer Crk	1991	36,900	Fair
Ill 3 NB over Palmer Rd/Palmer Crk	1984	30,200	Fair
Fai 255 EB over Mississippi River	1986	25,850	Fair
Fai 255WB over Mississippi River	1984	25,850	Fair
Fai 255 Nb/eb over UPRR	1984	25,850	Poor