US Bridges

TR 579 over Br Kickapoo CR

Fair

McLean County, Illinois · 3.0 MI SW Heyworth · Structure no. 057551900000000

Built
1929
96 years old, rebuilt 1980
Condition
Fair
inspected September 2024
Type
Slab
Concrete
Length
25 ft
1 main span
Daily traffic
50
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 579 over Br Kickapoo CR is a concrete slab carrying TR 579 over Br Kickapoo CR in McLean County, Illinois. It was built in 1929 and reconstructed in 1980, so it is 96 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 4% of them trucks, projected to reach 51 by 2046. The structure is 25 ft (7.7 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesTR 579
CrossesBr Kickapoo CR
Location3.0 MI SW Heyworth
RouteCounty Highway 0
CountyMcLean County
StateIllinois
Coordinates40.28866, -89.02695
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53.9 US tons
Inventory rating32.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length25 ft (7.7 m)
Longest span24 ft (7.4 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2024)
Projected traffic51 by 2046
Trucks4%
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 579 over Br Kickapoo CR built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1980.

What condition is TR 579 over Br Kickapoo CR 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 2024.

How much traffic does TR 579 over Br Kickapoo CR carry?

About 50 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is TR 579 over Br Kickapoo CR?

The structure is 25 ft (7.7 m) long with a longest span of 24 ft (7.4 m) and a deck 26 ft wide.

Who owns TR 579 over Br Kickapoo CR?

It is owned by the Town or Township Highway Agency.