Home › Illinois › Randolph County › Ill 150 over Miss Riv/fau 9416

Ill 150 over Miss Riv/fau 9416

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

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

Ill 150 over Miss Riv/fau 9416 in Randolph County, Illinois, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
It was built in 1942 and reconstructed in 1946, making it 83 years old at the 2025 inventory.
It carries about 6,250 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 10 of the 149 inventoried bridges in Randolph County rated poor (6.7%); 10 (6.7%) 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	Continuous steel through truss
Length	about 2,827 ft
Location	AT CHESTER - MoDOT
NBI structure number	079600100000000
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
Il 3 over Black Creek	1995	8,400	Good
Il 3 over UPRR	1971	5,650	Good
Il 3 over Nine Mile Creek	2024	5,650	Good
Ill 4-150 over Marys River	1928	5,500	Fair
Il 150 over Little Marys River	1999	5,450	Good
Ill 4 & 150 over Cox Creek	1977	4,900	Fair