US Bridges

US136/336 over Trib to Prarie CR

Good

Hancock County, Illinois · 2.3M E of Carthage · Structure no. 034251300000000

Built
2007
18 years old
Condition
Good
inspected March 2023
Type
Culvert
Concrete
Length
29 ft
2 main spans
Daily traffic
4,000
2023 count
Owner
State
State Highway Agency

About this bridge

US136/336 over Trib to Prarie CR is a concrete culvert carrying US136/336 over Trib to Prarie CR in Hancock County, Illinois. It was built in 2007, so it is 18 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 4,000 vehicles a day, roughly 17% of them trucks, projected to reach 4,394 by 2046. The structure is 29 ft (8.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesUS136/336
CrossesTrib to Prarie CR
Location2.3M E of Carthage
RouteU.S. Route 136
Coordinates40.41513, -91.07596
Functional classRural Principal Arterial - Other

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 inspectionMarch 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment0: Immediate repair necessary to put back in service
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckOther
Main spans2
Design loadUnknown
Structure length29 ft (8.7 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,000 (2023)
Projected traffic4,394 by 2046
Trucks17%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US136/336 over Trib to Prarie CR built?

It was built in 2007, making it 18 years old in 2025.

What condition is US136/336 over Trib to Prarie CR 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 March 2023.

How much traffic does US136/336 over Trib to Prarie CR carry?

About 4,000 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is US136/336 over Trib to Prarie CR?

The structure is 29 ft (8.7 m) long with a longest span of 11 ft (3.4 m).

Who owns US136/336 over Trib to Prarie CR?

It is owned by the State Highway Agency.