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I-355 NB & SB over BN&SF RR

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

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

I-355 NB & SB over BN&SF RR in Will 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 6 (satisfactory condition) on the 0-9 scale.
It was built in 2008, making it 17 years old at the 2025 inventory.
It carries about 41,950 vehicles a day (traffic count year 2023).
It is one of 307 of the 656 inventoried bridges in Will County rated fair (46.8%); 65 (9.9%) 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	Continuous prestressed concrete stringer or multi-beam girder
Length	about 195 ft
Location	1M E of Joliet Rd
NBI structure number	099033500000000
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 over Il 53	1980	108,500	Fair
I- 80 over Creek	1967	96,000	Fair
I- 80 over Marley Creek	1966	94,400	Good
I-355 over I55 Rmp to NBI355	2007	83,900	Fair
I- 55 over Lily Cache Creek	2007	83,500	Fair
I- 55 over Joliet Rd	1955	73,200	Poor