US Bridges

I-57 SB over West South Street

Fair

Jefferson County, Illinois · Dix Interchange · Structure no. 041011600000000

Built
2022
3 years old
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
155 ft
2 main spans
Daily traffic
10,500
2024 count
Owner
State
State Highway Agency

About this bridge

I-57 SB over West South Street is a steel continuous stringer/multi-beam or girder carrying I-57 SB over West South Street in Jefferson County, Illinois. It was built in 2022, so it is 3 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 10,500 vehicles a day, roughly 43% of them trucks, projected to reach 15,900 by 2047. The structure is 155 ft (47.1 m) long and 59 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesI-57 SB
CrossesWest South Street
LocationDix Interchange
RouteInterstate 57
Coordinates38.43999, -88.95244
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.9 US tons
Inventory rating41.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length155 ft (47.1 m)
Longest span79 ft (24 m)
Deck width59 ft (18 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,500 (2024)
Projected traffic15,900 by 2047
Trucks43%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed8.1 mi (13 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 SB over West South Street built?

It was built in 2022, making it 3 years old in 2025.

What condition is I-57 SB over West South Street 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 2025.

How much traffic does I-57 SB over West South Street carry?

About 10,500 vehicles per day (2024 count), of which roughly 43% are trucks.

How long is I-57 SB over West South Street?

The structure is 155 ft (47.1 m) long with a longest span of 79 ft (24 m) and a deck 59 ft wide.

Who owns I-57 SB over West South Street?

It is owned by the State Highway Agency.