US Bridges

TR 183 B over I-70

Good

Clark County, Illinois · 1.25 MI E Martinsvil · Structure no. 012004200000000

Built
1969
56 years old, rebuilt 2003
Condition
Good
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
235 ft
4 main spans
Daily traffic
100
2021 count
Owner
State
State Highway Agency

About this bridge

TR 183 B over I-70 is a steel continuous stringer/multi-beam or girder carrying TR 183 B over I-70 in Clark County, Illinois. It was built in 1969 and reconstructed in 2003, 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 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 101 by 2046. The structure is 235 ft (71.5 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesTR 183 B
CrossesI-70
Location1.25 MI E Martinsvil
RouteCounty Highway 0
Coordinates39.36713, -87.86143
Functional classRural Local

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.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.4 US tons
Inventory rating36 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length235 ft (71.5 m)
Longest span73 ft (22.2 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2021)
Projected traffic101 by 2046
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 TR 183 B over I-70 built?

It was built in 1969, making it 56 years old in 2025. It was reconstructed in 2003.

What condition is TR 183 B over I-70 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 February 2025.

How much traffic does TR 183 B over I-70 carry?

About 100 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is TR 183 B over I-70?

The structure is 235 ft (71.5 m) long with a longest span of 73 ft (22.2 m) and a deck 30 ft wide.

Who owns TR 183 B over I-70?

It is owned by the State Highway Agency.