US Bridges

TR-531 over Trib Gun Creek

Good

Jefferson County, Illinois · 1 MI E Ina · Structure no. 041504700000000

Built
1994
31 years old
Condition
Good
inspected December 2024
Type
Culvert
Concrete
Length
28 ft
3 main spans
Daily traffic
250
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR-531 over Trib Gun Creek is a concrete culvert carrying TR-531 over Trib Gun Creek in Jefferson County, Illinois. It was built in 1994, so it is 31 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 250 vehicles a day, roughly 22% of them trucks, projected to reach 253 by 2046. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 6.2 mi (10 km).

CarriesTR-531
CrossesTrib Gun Creek
Location1 MI E Ina
RouteCounty Highway 0
Coordinates38.14855, -88.87091
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 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 alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2021)
Projected traffic253 by 2046
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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-531 over Trib Gun Creek built?

It was built in 1994, making it 31 years old in 2025.

What condition is TR-531 over Trib Gun 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 December 2024.

How much traffic does TR-531 over Trib Gun Creek carry?

About 250 vehicles per day (2021 count), of which roughly 22% are trucks.

How long is TR-531 over Trib Gun Creek?

The structure is 28 ft (8.5 m) long with a longest span of 9 ft (2.7 m).

Who owns TR-531 over Trib Gun Creek?

It is owned by the Town or Township Highway Agency.