US Bridges

Ch 36(BAKER Rd) over Willow Branch

Fair

Macon County, Illinois · 2.9 MI SW of Macon · Structure no. 058321100000000

Built
1976
49 years old, rebuilt 1994
Condition
Fair
inspected December 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
100
2020 count
Owner
County
County Highway Agency

About this bridge

Ch 36(BAKER Rd) over Willow Branch is a prestressed concrete box beam or girders - multiple carrying Ch 36(BAKER Rd) over Willow Branch in Macon County, Illinois. It was built in 1976 and reconstructed in 1994, so it is 49 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 100 vehicles a day, roughly 5% of them trucks, projected to reach 101 by 2046. The structure is 50 ft (15.3 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCh 36(BAKER Rd)
CrossesWillow Branch
Location2.9 MI SW of Macon
RouteCounty Highway 0
CountyMacon County
StateIllinois
Coordinates39.67028, -89.02602
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length50 ft (15.3 m)
Longest span48 ft (14.7 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2020)
Projected traffic101 by 2046
Trucks5%
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

OwnerCounty Highway Agency
Maintained byCounty 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 Ch 36(BAKER Rd) over Willow Branch built?

It was built in 1976, making it 49 years old in 2025. It was reconstructed in 1994.

What condition is Ch 36(BAKER Rd) over Willow 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 December 2023.

How much traffic does Ch 36(BAKER Rd) over Willow Branch carry?

About 100 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Ch 36(BAKER Rd) over Willow Branch?

The structure is 50 ft (15.3 m) long with a longest span of 48 ft (14.7 m) and a deck 24 ft wide.

Who owns Ch 36(BAKER Rd) over Willow Branch?

It is owned by the County Highway Agency.