US Bridges

US 24 over Otter Creek

Fair

Fulton County, Illinois · 1 MI SW JCT US136&24 · Structure no. 029000500000000

Built
1925
100 years old, rebuilt 2007
Condition
Fair
inspected June 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
320 ft
5 main spans
Daily traffic
1,750
2023 count
Owner
State
State Highway Agency

About this bridge

US 24 over Otter Creek is a prestressed concrete box beam or girders - multiple carrying US 24 over Otter Creek in Fulton County, Illinois. It was built in 1925 and reconstructed in 2007, so it is 100 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 1,750 vehicles a day, roughly 17% of them trucks, projected to reach 1,818 by 2046. The structure is 320 ft (97.6 m) long and 33 ft wide. If it were closed, the detour would be 34.2 mi (55 km).

CarriesUS 24
CrossesOtter Creek
Location1 MI SW JCT US136&24
RouteU.S. Route 24
Coordinates40.29529, -90.20413
Functional classRural Principal Arterial - Other

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating44.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans5
Design loadHS 20
Structure length320 ft (97.6 m)
Longest span76 ft (23.2 m)
Deck width33 ft (10.1 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,750 (2023)
Projected traffic1,818 by 2046
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.2 mi (55 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US 24 over Otter Creek built?

It was built in 1925, making it 100 years old in 2025. It was reconstructed in 2007.

What condition is US 24 over Otter 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 June 2023.

How much traffic does US 24 over Otter Creek carry?

About 1,750 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is US 24 over Otter Creek?

The structure is 320 ft (97.6 m) long with a longest span of 76 ft (23.2 m) and a deck 33 ft wide.

Who owns US 24 over Otter Creek?

It is owned by the State Highway Agency.