US Bridges

TR 160 over Coon Branch

Fair

Washington County, Illinois · 4 MI NW of Hoyleton · Structure no. 095307400000000

Built
1917
108 years old
Condition
Fair
inspected October 2024
Type
Tee Beam
Concrete
Length
34 ft
1 main span
Daily traffic
50
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 160 over Coon Branch is a concrete tee beam carrying TR 160 over Coon Branch in Washington County, Illinois. It was built in 1917, so it is 108 years old, older 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 50 vehicles a day, roughly 12% of them trucks, projected to reach 61 by 2046. The structure is 34 ft (10.4 m) long and 17 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesTR 160
CrossesCoon Branch
Location4 MI NW of Hoyleton
RouteCounty Highway 0
CountyWashington County
StateIllinois
Coordinates38.48112, -89.32992
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating71.1 US tons
Inventory rating42.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length34 ft (10.4 m)
Longest span32 ft (9.8 m)
Deck width17 ft (5.2 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2024)
Projected traffic61 by 2046
Trucks12%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$31,000
NavigationNo navigation control on waterway

Frequently asked questions

When was TR 160 over Coon Branch built?

It was built in 1917, making it 108 years old in 2025.

What condition is TR 160 over Coon Branch 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 October 2024.

How much traffic does TR 160 over Coon Branch carry?

About 50 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is TR 160 over Coon Branch?

The structure is 34 ft (10.4 m) long with a longest span of 32 ft (9.8 m) and a deck 17 ft wide.

Who owns TR 160 over Coon Branch?

It is owned by the Town or Township Highway Agency.