US Bridges

TR-343 over Trib. to Mud Creek

Fair

Iroquois County, Illinois · 3 MI E. Ill RTE 1 · Structure no. 038522600000000

Built
1965
60 years old
Condition
Fair
inspected August 2024
Type
Channel Beam
Concrete
Length
31 ft
1 main span
Daily traffic
50
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR-343 over Trib. to Mud Creek is a concrete channel beam carrying TR-343 over Trib. to Mud Creek in Iroquois County, Illinois. It was built in 1965, so it is 60 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 50 vehicles a day, projected to reach 51 by 2046. The structure is 31 ft (9.6 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesTR-343
CrossesTrib. to Mud Creek
Location3 MI E. Ill RTE 1
RouteCounty Highway 0
CountyIroquois County
StateIllinois
Coordinates40.57532, -87.64065
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.5 US tons
Inventory rating25.4 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 15
Structure length31 ft (9.6 m)
Longest span29 ft (8.9 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2022)
Projected traffic51 by 2046
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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-343 over Trib. to Mud Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is TR-343 over Trib. to Mud Creek 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 August 2024.

How much traffic does TR-343 over Trib. to Mud Creek carry?

About 50 vehicles per day (2022 count).

How long is TR-343 over Trib. to Mud Creek?

The structure is 31 ft (9.6 m) long with a longest span of 29 ft (8.9 m) and a deck 26 ft wide.

Who owns TR-343 over Trib. to Mud Creek?

It is owned by the Town or Township Highway Agency.