US Bridges

TR 345 a over Trib Camb Lake

Fair

Franklin County, Illinois · Plumfield · Structure no. 028323400000000

Built
1981
44 years old
Condition
Fair
inspected March 2024
Type
Culvert
Concrete
Length
26 ft
2 main spans
Daily traffic
325
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 345 a over Trib Camb Lake is a concrete culvert carrying TR 345 a over Trib Camb Lake in Franklin County, Illinois. It was built in 1981, so it is 44 years old, younger 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 325 vehicles a day, roughly 14% of them trucks, projected to reach 278 by 2046. The structure is 26 ft (7.9 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 345 a
CrossesTrib Camb Lake
LocationPlumfield
RouteCounty Highway 0
CountyFranklin County
StateIllinois
Coordinates37.89432, -89.00725
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic325 (2024)
Projected traffic278 by 2046
Trucks14%
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 345 a over Trib Camb Lake built?

It was built in 1981, making it 44 years old in 2025.

What condition is TR 345 a over Trib Camb Lake 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 2024.

How much traffic does TR 345 a over Trib Camb Lake carry?

About 325 vehicles per day (2024 count), of which roughly 14% are trucks.

How long is TR 345 a over Trib Camb Lake?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m) and a deck 26 ft wide.

Who owns TR 345 a over Trib Camb Lake?

It is owned by the Town or Township Highway Agency.