US Bridges

TR 141 over Trib to Iroq River

Good

Iroquois County, Illinois · 2 MI E US 52 · Structure no. 038375200000000

Built
2006
19 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
54 ft
1 main span
Daily traffic
50
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 141 over Trib to Iroq River is a prestressed concrete box beam or girders - multiple carrying TR 141 over Trib to Iroq River in Iroquois County, Illinois. It was built in 2006, so it is 19 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 50 vehicles a day, projected to reach 51 by 2046. The structure is 54 ft (16.5 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesTR 141
CrossesTrib to Iroq River
Location2 MI E US 52
RouteCounty Highway 0
Coordinates40.80657, -87.5419
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 2023
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 length54 ft (16.5 m)
Longest span51 ft (15.5 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 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 141 over Trib to Iroq River built?

It was built in 2006, making it 19 years old in 2025.

What condition is TR 141 over Trib to Iroq River 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 2023.

How much traffic does TR 141 over Trib to Iroq River carry?

About 50 vehicles per day (2022 count).

How long is TR 141 over Trib to Iroq River?

The structure is 54 ft (16.5 m) long with a longest span of 51 ft (15.5 m) and a deck 30 ft wide.

Who owns TR 141 over Trib to Iroq River?

It is owned by the Town or Township Highway Agency.