US Bridges

FAS 1481-CH 7 over Sargent Slough

Good

Tazewell County, Illinois · S.CTR-31-T24NR2W · Structure no. 090500200000000

Built
1960
65 years old
Condition
Good
inspected January 2025
Type
Culvert
Concrete Continuous
Length
39 ft
3 main spans
Daily traffic
1,150
2023 count
Owner
County
County Highway Agency

About this bridge

FAS 1481-CH 7 over Sargent Slough is a concrete continuous culvert carrying FAS 1481-CH 7 over Sargent Slough in Tazewell County, Illinois. It was built in 1960, so it is 65 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,150 vehicles a day, roughly 11% of them trucks, projected to reach 960 by 2046. The structure is 39 ft (11.9 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFAS 1481-CH 7
CrossesSargent Slough
LocationS.CTR-31-T24NR2W
RouteCounty Highway 0
Coordinates40.48401, -89.37024
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2025
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
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.9 US tons
Inventory rating23.3 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 15
Structure length39 ft (11.9 m)
Longest span13 ft (3.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,150 (2023)
Projected traffic960 by 2046
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 1481-CH 7 over Sargent Slough built?

It was built in 1960, making it 65 years old in 2025.

What condition is FAS 1481-CH 7 over Sargent Slough in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.

How much traffic does FAS 1481-CH 7 over Sargent Slough carry?

About 1,150 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is FAS 1481-CH 7 over Sargent Slough?

The structure is 39 ft (11.9 m) long with a longest span of 13 ft (3.9 m).

Who owns FAS 1481-CH 7 over Sargent Slough?

It is owned by the County Highway Agency.