US Bridges

I-70 (wb) over Big Creek

Fair

Clark County, Illinois · 1 MI E Ill 1 · Structure no. 012000400000000

Built
1968
57 years old, rebuilt 2002
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
276 ft
4 main spans
Daily traffic
12,450
2023 count
Owner
State
State Highway Agency

About this bridge

I-70 (wb) over Big Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying I-70 (wb) over Big Creek in Clark County, Illinois. It was built in 1968 and reconstructed in 2002, so it is 57 years old, older 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 12,450 vehicles a day, roughly 59% of them trucks, projected to reach 14,140 by 2046. The structure is 276 ft (84.1 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-70 (wb)
CrossesBig Creek
Location1 MI E Ill 1
RouteInterstate 70
Coordinates39.42239, -87.67203
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.9 US tons
Inventory rating51.8 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length276 ft (84.1 m)
Longest span67 ft (20.5 m)
Deck width45 ft (13.8 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,450 (2023)
Projected traffic14,140 by 2046
Trucks59%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.7 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I-70 (wb) over Big Creek built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2002.

What condition is I-70 (wb) 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 May 2024.

How much traffic does I-70 (wb) over Big Creek carry?

About 12,450 vehicles per day (2023 count), of which roughly 59% are trucks.

How long is I-70 (wb) over Big Creek?

The structure is 276 ft (84.1 m) long with a longest span of 67 ft (20.5 m) and a deck 45 ft wide.

Who owns I-70 (wb) over Big Creek?

It is owned by the State Highway Agency.