US Bridges

TR 12 over Unnamed Trib

Good

De Witt County, Illinois · 2.8 MI NW Kenney · Structure no. 020318900000000

Built
2007
18 years old
Condition
Good
inspected September 2021
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
46 ft
1 main span
Daily traffic
75
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 12 over Unnamed Trib is a prestressed concrete box beam or girders - multiple carrying TR 12 over Unnamed Trib in De Witt 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 75 vehicles a day, roughly 3% of them trucks, projected to reach 101 by 2046. The structure is 46 ft (14 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesTR 12
CrossesUnnamed Trib
Location2.8 MI NW Kenney
RouteCounty Highway 0
Coordinates40.12541, -89.12372
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length46 ft (14 m)
Longest span44 ft (13.3 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2022)
Projected traffic101 by 2046
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 12 over Unnamed Trib built?

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

What condition is TR 12 over Unnamed Trib 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 September 2021.

How much traffic does TR 12 over Unnamed Trib carry?

About 75 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is TR 12 over Unnamed Trib?

The structure is 46 ft (14 m) long with a longest span of 44 ft (13.3 m) and a deck 28 ft wide.

Who owns TR 12 over Unnamed Trib?

It is owned by the Town or Township Highway Agency.