US Bridges

I- 57 NB over 149th ST

Fair

Cook County, Illinois · 7.4 M SW Il 1 · Structure no. 016105100000000

Built
1967
58 years old, rebuilt 2021
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
43 ft
1 main span
Daily traffic
49,300
2024 count
Owner
State
State Highway Agency

About this bridge

I- 57 NB over 149th ST is a steel stringer/multi-beam or girder carrying I- 57 NB over 149th ST in Cook County, Illinois. It was built in 1967 and reconstructed in 2021, so it is 58 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 49,300 vehicles a day, roughly 5% of them trucks, projected to reach 49,187 by 2046. The structure is 43 ft (13.1 m) long and 84 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesI- 57 NB
Crosses149th ST
Location7.4 M SW Il 1
RouteInterstate 57
Coordinates41.62127, -87.68332
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.6 US tons
Inventory rating53.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length43 ft (13.1 m)
Longest span39 ft (12 m)
Deck width84 ft (25.6 m)
Roadway width81 ft (24.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic49,300 (2024)
Projected traffic49,187 by 2046
Trucks5%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I- 57 NB over 149th ST built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2021.

What condition is I- 57 NB over 149th ST in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2024.

How much traffic does I- 57 NB over 149th ST carry?

About 49,300 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is I- 57 NB over 149th ST?

The structure is 43 ft (13.1 m) long with a longest span of 39 ft (12 m) and a deck 84 ft wide.

Who owns I- 57 NB over 149th ST?

It is owned by the State Highway Agency.