US Bridges

FAS 853 over Little Marys River

Good

Randolph County, Illinois · 3.5MI S of Sparta · Structure no. 079302600000000

Built
1988
37 years old
Condition
Good
inspected February 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
61 ft
1 main span
Daily traffic
1,000
2024 count
Owner
County
County Highway Agency

About this bridge

FAS 853 over Little Marys River is a prestressed concrete box beam or girders - multiple carrying FAS 853 over Little Marys River in Randolph County, Illinois. It was built in 1988, so it is 37 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,000 vehicles a day, roughly 10% of them trucks, projected to reach 1,313 by 2046. The structure is 61 ft (18.6 m) long and 28 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesFAS 853
CrossesLittle Marys River
Location3.5MI S of Sparta
RouteCounty Highway 0
Coordinates38.06218, -89.74131
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating40.3 US tons
Inventory rating30.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length61 ft (18.6 m)
Longest span59 ft (18 m)
Deck width28 ft (8.6 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2024)
Projected traffic1,313 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 853 over Little Marys River built?

It was built in 1988, making it 37 years old in 2025.

What condition is FAS 853 over Little Marys River 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 February 2024.

How much traffic does FAS 853 over Little Marys River carry?

About 1,000 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is FAS 853 over Little Marys River?

The structure is 61 ft (18.6 m) long with a longest span of 59 ft (18 m) and a deck 28 ft wide.

Who owns FAS 853 over Little Marys River?

It is owned by the County Highway Agency.