US Bridges

TR 23 over I-55

Fair

McLean County, Illinois · 1 MI S of Chenoa · Structure no. 057017700000000

Built
1972
53 years old
Condition
Fair
inspected May 2023
Type
Box Beam or Girders - Single or Spread
Steel Continuous
Length
246 ft
2 main spans
Daily traffic
75
2024 count
Owner
State
State Highway Agency

About this bridge

TR 23 over I-55 is a steel continuous box beam or girders - single or spread carrying TR 23 over I-55 in McLean County, Illinois. It was built in 1972, so it is 53 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 75 vehicles a day, roughly 3% of them trucks, projected to reach 76 by 2046. The structure is 246 ft (75 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesTR 23
CrossesI-55
Location1 MI S of Chenoa
RouteCounty Highway 0
CountyMcLean County
StateIllinois
Coordinates40.72677, -88.73705
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating69.7 US tons
Inventory rating41.8 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 15
Structure length246 ft (75 m)
Longest span106 ft (32.2 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2024)
Projected traffic76 by 2046
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 23 over I-55 built?

It was built in 1972, making it 53 years old in 2025.

What condition is TR 23 over I-55 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 2023.

How much traffic does TR 23 over I-55 carry?

About 75 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is TR 23 over I-55?

The structure is 246 ft (75 m) long with a longest span of 106 ft (32.2 m) and a deck 30 ft wide.

Who owns TR 23 over I-55?

It is owned by the State Highway Agency.