US Bridges

FAS 1246/CH 24 over Big Bureau Creek

Fair

Bureau County, Illinois · 1 MI NW Tiskilwa · Structure no. 006310300000000

Built
1989
36 years old
Condition
Fair
inspected March 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
189 ft
3 main spans
Daily traffic
250
2020 count
Owner
County
County Highway Agency

About this bridge

FAS 1246/CH 24 over Big Bureau Creek is a prestressed concrete box beam or girders - multiple carrying FAS 1246/CH 24 over Big Bureau Creek in Bureau County, Illinois. It was built in 1989, so it is 36 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 6 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 250 vehicles a day, roughly 6% of them trucks, projected to reach 253 by 2046. The structure is 189 ft (57.5 m) long and 30 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesFAS 1246/CH 24
CrossesBig Bureau Creek
Location1 MI NW Tiskilwa
RouteCounty Highway 0
CountyBureau County
StateIllinois
Coordinates41.31409, -89.51963
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating71.8 US tons
Inventory rating41.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length189 ft (57.5 m)
Longest span80 ft (24.4 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2020)
Projected traffic253 by 2046
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 FAS 1246/CH 24 over Big Bureau Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is FAS 1246/CH 24 over Big Bureau 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 March 2024.

How much traffic does FAS 1246/CH 24 over Big Bureau Creek carry?

About 250 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is FAS 1246/CH 24 over Big Bureau Creek?

The structure is 189 ft (57.5 m) long with a longest span of 80 ft (24.4 m) and a deck 30 ft wide.

Who owns FAS 1246/CH 24 over Big Bureau Creek?

It is owned by the County Highway Agency.