US Bridges

TR 29 over I-55/OR#66/ICG RR

Fair

Livingston County, Illinois · 2 MI S. of Dwight · Structure no. 053014100000000

Built
1977
48 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
535 ft
4 main spans
Daily traffic
75
2023 count
Owner
State
State Highway Agency

About this bridge

TR 29 over I-55/OR#66/ICG RR is a steel continuous stringer/multi-beam or girder carrying TR 29 over I-55/OR#66/ICG RR in Livingston County, Illinois. It was built in 1977, so it is 48 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, projected to reach 76 by 2046. The structure is 535 ft (163.1 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 29
CrossesI-55/OR#66/ICG RR
Location2 MI S. of Dwight
RouteCounty Highway 0
CountyLivingston County
StateIllinois
Coordinates41.065, -88.46334
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 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 alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating57.1 US tons
Inventory rating34.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4 (+2 approach)
Design loadHS 15
Structure length535 ft (163.1 m)
Longest span121 ft (36.9 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2023)
Projected traffic76 by 2046
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
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 29 over I-55/OR#66/ICG RR built?

It was built in 1977, making it 48 years old in 2025.

What condition is TR 29 over I-55/OR#66/ICG RR 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 March 2023.

How much traffic does TR 29 over I-55/OR#66/ICG RR carry?

About 75 vehicles per day (2023 count).

How long is TR 29 over I-55/OR#66/ICG RR?

The structure is 535 ft (163.1 m) long with a longest span of 121 ft (36.9 m) and a deck 30 ft wide.

Who owns TR 29 over I-55/OR#66/ICG RR?

It is owned by the State Highway Agency.