US Bridges

I 57 SB over Lake Creek

Fair

Williamson County, Illinois · 0.3 MI S Johnston C · Structure no. 100007900000000

Built
2005
20 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
156 ft
3 main spans
Daily traffic
19,850
2024 count
Owner
State
State Highway Agency

About this bridge

I 57 SB over Lake Creek is a steel continuous stringer/multi-beam or girder carrying I 57 SB over Lake Creek in Williamson County, Illinois. It was built in 2005, so it is 20 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 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 19,850 vehicles a day, roughly 43% of them trucks, projected to reach 21,412 by 2046. The structure is 156 ft (47.5 m) long and 81 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 57 SB
CrossesLake Creek
Location0.3 MI S Johnston C
RouteInterstate 57
CountyWilliamson County
StateIllinois
Coordinates37.81279, -88.94574
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating74.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length156 ft (47.5 m)
Longest span56 ft (17.1 m)
Deck width81 ft (24.7 m)
Roadway width78 ft (23.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,850 (2024)
Projected traffic21,412 by 2046
Trucks43%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Lake Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is I 57 SB over Lake 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 August 2023.

How much traffic does I 57 SB over Lake Creek carry?

About 19,850 vehicles per day (2024 count), of which roughly 43% are trucks.

How long is I 57 SB over Lake Creek?

The structure is 156 ft (47.5 m) long with a longest span of 56 ft (17.1 m) and a deck 81 ft wide.

Who owns I 57 SB over Lake Creek?

It is owned by the State Highway Agency.