US Bridges

TR 120 over Langan Creek

Fair

Iroquois County, Illinois · 2.71 Mi. S. Chebanse · Structure no. 038365100000000

Built
2002
23 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
126 ft
3 main spans
Daily traffic
200
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 120 over Langan Creek is a prestressed concrete box beam or girders - multiple carrying TR 120 over Langan Creek in Iroquois County, Illinois. It was built in 2002, so it is 23 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 5 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 200 vehicles a day, roughly 30% of them trucks, projected to reach 505 by 2046. The structure is 126 ft (38.3 m) long and 27 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesTR 120
CrossesLangan Creek
Location2.71 Mi. S. Chebanse
RouteCounty Highway 0
CountyIroquois County
StateIllinois
Coordinates40.96331, -87.92493
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length126 ft (38.3 m)
Longest span52 ft (15.9 m)
Deck width27 ft (8.2 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2022)
Projected traffic505 by 2046
Trucks30%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 120 over Langan Creek built?

It was built in 2002, making it 23 years old in 2025.

What condition is TR 120 over Langan 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 September 2023.

How much traffic does TR 120 over Langan Creek carry?

About 200 vehicles per day (2022 count), of which roughly 30% are trucks.

How long is TR 120 over Langan Creek?

The structure is 126 ft (38.3 m) long with a longest span of 52 ft (15.9 m) and a deck 27 ft wide.

Who owns TR 120 over Langan Creek?

It is owned by the Town or Township Highway Agency.