US Bridges

County Highway 29 over Trib to Littlers Crk

Good

Knox County, Illinois · E.CTR-31-T9NR3E · Structure no. 048337800000000

Built
2004
21 years old
Condition
Good
inspected January 2024
Type
Culvert
Concrete
Length
31 ft
2 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

County Highway 29 over Trib to Littlers Crk is a concrete culvert carrying County Highway 29 over Trib to Littlers Crk in Knox County, Illinois. It was built in 2004, so it is 21 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 100 vehicles a day, roughly 19% of them trucks, projected to reach 202 by 2046. The structure is 31 ft (9.5 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesCounty Highway 29
CrossesTrib to Littlers Crk
LocationE.CTR-31-T9NR3E
RouteCounty Highway 0
CountyKnox County
StateIllinois
Coordinates40.7208, -90.1959
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length31 ft (9.5 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic202 by 2046
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 County Highway 29 over Trib to Littlers Crk built?

It was built in 2004, making it 21 years old in 2025.

What condition is County Highway 29 over Trib to Littlers Crk 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 2024.

How much traffic does County Highway 29 over Trib to Littlers Crk carry?

About 100 vehicles per day (2022 count), of which roughly 19% are trucks.

How long is County Highway 29 over Trib to Littlers Crk?

The structure is 31 ft (9.5 m) long with a longest span of 14 ft (4.3 m).

Who owns County Highway 29 over Trib to Littlers Crk?

It is owned by the County Highway Agency.