US Bridges

I-57 SB over Langan Creek

Fair

Iroquois County, Illinois · 2.23 MI S Chebanse I · Structure no. 038021500000000

Built
2013
12 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
216 ft
3 main spans
Daily traffic
9,550
2023 count
Owner
State
State Highway Agency

About this bridge

I-57 SB over Langan Creek is a steel continuous stringer/multi-beam or girder carrying I-57 SB over Langan Creek in Iroquois County, Illinois. It was built in 2013, so it is 12 years old, younger 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 5 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 9,550 vehicles a day, roughly 31% of them trucks, projected to reach 8,787 by 2046. The structure is 216 ft (65.8 m) long and 43 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesI-57 SB
CrossesLangan Creek
Location2.23 MI S Chebanse I
RouteInterstate 57
CountyIroquois County
StateIllinois
Coordinates40.96903, -87.91849
Functional classRural 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating94.7 US tons
Inventory rating72.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length216 ft (65.8 m)
Longest span81 ft (24.8 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,550 (2023)
Projected traffic8,787 by 2046
Trucks31%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-57 SB over Langan Creek built?

It was built in 2013, making it 12 years old in 2025.

What condition is I-57 SB over Langan Creek 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 SB over Langan Creek carry?

About 9,550 vehicles per day (2023 count), of which roughly 31% are trucks.

How long is I-57 SB over Langan Creek?

The structure is 216 ft (65.8 m) long with a longest span of 81 ft (24.8 m) and a deck 43 ft wide.

Who owns I-57 SB over Langan Creek?

It is owned by the State Highway Agency.