US Bridges

I-57 SB over Big Creek

Fair

Union County, Illinois · 2 MI N Dongola · Structure no. 091007800000000

Built
2020
5 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
179 ft
3 main spans
Daily traffic
5,950
2024 count
Owner
State
State Highway Agency

About this bridge

I-57 SB over Big Creek is a steel continuous stringer/multi-beam or girder carrying I-57 SB over Big Creek in Union County, Illinois. It was built in 2020, so it is 5 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 5,950 vehicles a day, roughly 55% of them trucks, projected to reach 5,858 by 2046. The structure is 179 ft (54.7 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-57 SB
CrossesBig Creek
Location2 MI N Dongola
RouteInterstate 57
CountyUnion County
StateIllinois
Coordinates37.40194, -89.15468
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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.9 US tons
Inventory rating56.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length179 ft (54.7 m)
Longest span81 ft (24.6 m)
Deck width45 ft (13.7 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,950 (2024)
Projected traffic5,858 by 2046
Trucks55%
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 Big Creek built?

It was built in 2020, making it 5 years old in 2025.

What condition is I-57 SB over Big 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 November 2024.

How much traffic does I-57 SB over Big Creek carry?

About 5,950 vehicles per day (2024 count), of which roughly 55% are trucks.

How long is I-57 SB over Big Creek?

The structure is 179 ft (54.7 m) long with a longest span of 81 ft (24.6 m) and a deck 45 ft wide.

Who owns I-57 SB over Big Creek?

It is owned by the State Highway Agency.