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Fap 412 US 51(SB) over US 136

McLean County, Illinois · rated Fair in the 2025 National Bridge Inventory

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

Fap 412 US 51(SB) over US 136 in McLean County, Illinois, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1986, making it 39 years old at the 2025 inventory.
It carries about 9,650 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 230 of the 625 inventoried bridges in McLean County rated fair (36.8%); 16 (2.6%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Steel stringer or multi-beam girder
Length	about 173 ft
Location	0.51 Mi W of Old 51
NBI structure number	057019800000000
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I-55/74 (NB & SB) over Unnamed Creek	1991	42,100	Fair
I-55 Busn Lp NB & over Sugar CR & Bike Path	2000	41,100	Fair
Fai 74 over Ditch	1966	28,400	Good
I-55 & FAS294 over Stream	1976	25,400	Fair
I-55 Busn Loop over US 51 at Bloomington	1939	25,000	Fair
I-55 Busn Loop over Norfolk Southern Railway	1940	25,000	Poor