US Bridges

TR 129 over Trib to Cache Creek

Good

Pulaski County, Illinois · 1 MI SW Mounds · Structure no. 077311700000000

Built
1993
32 years old
Condition
Good
inspected January 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
61 ft
1 main span
Daily traffic
10
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 129 over Trib to Cache Creek is a prestressed concrete box beam or girders - multiple carrying TR 129 over Trib to Cache Creek in Pulaski County, Illinois. It was built in 1993, so it is 32 years old, younger 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 10 vehicles a day, roughly 40% of them trucks, projected to reach 10 by 2046. The structure is 61 ft (18.7 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesTR 129
CrossesTrib to Cache Creek
Location1 MI SW Mounds
RouteCounty Highway 0
Coordinates37.104, -89.23169
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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length61 ft (18.7 m)
Longest span59 ft (18 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2023)
Projected traffic10 by 2046
Trucks40%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was TR 129 over Trib to Cache Creek built?

It was built in 1993, making it 32 years old in 2025.

What condition is TR 129 over Trib to Cache 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 January 2025.

How much traffic does TR 129 over Trib to Cache Creek carry?

About 10 vehicles per day (2023 count), of which roughly 40% are trucks.

How long is TR 129 over Trib to Cache Creek?

The structure is 61 ft (18.7 m) long with a longest span of 59 ft (18 m) and a deck 24 ft wide.

Who owns TR 129 over Trib to Cache Creek?

It is owned by the Town or Township Highway Agency.