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Oak St over Union Pacific RR

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

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

Oak St over Union Pacific RR in Cook 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 1940 and reconstructed in 2019, making it 85 years old at the 2025 inventory.
It carries about 1,050 vehicles a day (traffic count year 2022).
Its listed owner is a city or municipal highway agency.
It is one of 472 of the 1,722 inventoried bridges in Cook County rated good (27.4%); 246 (14.3%) 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.

Component ratings


Structure	Prestressed concrete multiple box beam
Length	about 147 ft
Location	Oak Ov Union P.rr
NBI structure number	016825700000000
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I- 90 94 Dan Ryan over Sanitary Sewer	1961	312,400	Fair
I- 80 94 Kingery over Bikeway Ave (RR Ave)	2004	254,100	Fair
I- 90 94 Ryan Elev over 15TH to 16TH Sts	1962	247,500	Fair
I- 90 94 Ryan Elev over 16TH to 18TH Sts	1962	247,500	Fair
I- 90 94 Ryan Elev over Canal to Stewart Sts	1962	245,500	Poor
I- 90 94 Elev Exp over Stewart Ave to 28 Pl	1962	245,500	Fair