US Bridges

I-70 (eb) over Mill Creek

Good

Clark County, Illinois · W Marshall · Structure no. 012005200000000

Built
1968
57 years old, rebuilt 2023
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
240 ft
3 main spans
Daily traffic
11,700
2023 count
Owner
State
State Highway Agency

About this bridge

I-70 (eb) over Mill Creek is a steel continuous stringer/multi-beam or girder carrying I-70 (eb) over Mill Creek in Clark County, Illinois. It was built in 1968 and reconstructed in 2023, 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 11,700 vehicles a day, roughly 61% of them trucks, projected to reach 12,827 by 2046. The structure is 240 ft (73.3 m) long and 43 ft wide.

Location

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CarriesI-70 (eb)
CrossesMill Creek
LocationW Marshall
RouteInterstate 70
CountyClark County
StateIllinois
Coordinates39.39457, -87.78907
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating62.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length240 ft (73.3 m)
Longest span92 ft (28 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,700 (2023)
Projected traffic12,827 by 2046
Trucks61%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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$1.5 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I-70 (eb) over Mill Creek built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2023.

What condition is I-70 (eb) over Mill Creek 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 October 2024.

How much traffic does I-70 (eb) over Mill Creek carry?

About 11,700 vehicles per day (2023 count), of which roughly 61% are trucks.

How long is I-70 (eb) over Mill Creek?

The structure is 240 ft (73.3 m) long with a longest span of 92 ft (28 m) and a deck 43 ft wide.

Who owns I-70 (eb) over Mill Creek?

It is owned by the State Highway Agency.