US Bridges

TR 371 over Whiskey Creek

Fair

Iroquois County, Illinois · 2.5E Rt 49 1.ON CO L · Structure no. 038414800000000

Built
1983
42 years old
Condition
Fair
inspected August 2024
Type
Channel Beam
Concrete
Length
90 ft
3 main spans
Daily traffic
75
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 371 over Whiskey Creek is a concrete channel beam carrying TR 371 over Whiskey Creek in Iroquois County, Illinois. It was built in 1983, so it is 42 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 75 vehicles a day, projected to reach 76 by 2046. The structure is 90 ft (27.4 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 371
CrossesWhiskey Creek
Location2.5E Rt 49 1.ON CO L
RouteCounty Highway 0
CountyIroquois County
StateIllinois
Coordinates40.50123, -87.85026
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
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 typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length90 ft (27.4 m)
Longest span32 ft (9.8 m)
Deck width26 ft (8 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2022)
Projected traffic76 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 371 over Whiskey Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is TR 371 over Whiskey 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 August 2024.

How much traffic does TR 371 over Whiskey Creek carry?

About 75 vehicles per day (2022 count).

How long is TR 371 over Whiskey Creek?

The structure is 90 ft (27.4 m) long with a longest span of 32 ft (9.8 m) and a deck 26 ft wide.

Who owns TR 371 over Whiskey Creek?

It is owned by the Town or Township Highway Agency.