US Bridges

Ch 23 over I-70

Fair

Clark County, Illinois · 2.5 MI W Martinsvill · Structure no. 012004000000000

Built
1969
56 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
226 ft
4 main spans
Daily traffic
300
2021 count
Owner
State
State Highway Agency

About this bridge

Ch 23 over I-70 is a steel continuous stringer/multi-beam or girder carrying Ch 23 over I-70 in Clark County, Illinois. It was built in 1969, so it is 56 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 300 vehicles a day, roughly 5% of them trucks, projected to reach 303 by 2046. The structure is 226 ft (68.8 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesCh 23
CrossesI-70
Location2.5 MI W Martinsvill
RouteCounty Highway 0
Coordinates39.34634, -87.9237
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating50.7 US tons
Inventory rating34 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length226 ft (68.8 m)
Longest span70 ft (21.4 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2021)
Projected traffic303 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

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 Ch 23 over I-70 built?

It was built in 1969, making it 56 years old in 2025.

What condition is Ch 23 over I-70 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 December 2024.

How much traffic does Ch 23 over I-70 carry?

About 300 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Ch 23 over I-70?

The structure is 226 ft (68.8 m) long with a longest span of 70 ft (21.4 m) and a deck 30 ft wide.

Who owns Ch 23 over I-70?

It is owned by the State Highway Agency.