US Bridges

I 57 NB over W. South ST - Ch 39

Good

Jefferson County, Illinois · Dix Interchange · Structure no. 041011500000000

Built
2023
2 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
155 ft
2 main spans
Daily traffic
10,800
2024 count
Owner
State
State Highway Agency

About this bridge

I 57 NB over W. South ST - Ch 39 is a steel continuous stringer/multi-beam or girder carrying I 57 NB over W. South ST - Ch 39 in Jefferson County, Illinois. It was built in 2023, so it is 2 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 10,800 vehicles a day, roughly 43% of them trucks, projected to reach 12,827 by 2046. The structure is 155 ft (47.1 m) long and 65 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesI 57 NB
CrossesW. South ST - Ch 39
LocationDix Interchange
RouteInterstate 57
CountyJefferson County
StateIllinois
Coordinates38.43979, -88.95236
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation9: Superior to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.8 US tons
Inventory rating45.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
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 width65 ft (19.8 m)
Roadway width62 ft (18.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,800 (2024)
Projected traffic12,827 by 2046
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 NB over W. South ST - Ch 39 built?

It was built in 2023, making it 2 years old in 2025.

What condition is I 57 NB over W. South ST - Ch 39 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does I 57 NB over W. South ST - Ch 39 carry?

About 10,800 vehicles per day (2024 count), of which roughly 43% are trucks.

How long is I 57 NB over W. South ST - Ch 39?

The structure is 155 ft (47.1 m) long with a longest span of 79 ft (24 m) and a deck 65 ft wide.

Who owns I 57 NB over W. South ST - Ch 39?

It is owned by the State Highway Agency.