US Bridges

FAS 862 over Little Marys River

Fair

Randolph County, Illinois · 862 over Little Mary · Structure no. 079304200000000

Built
1962
63 years old
Condition
Fair
inspected January 2025
Type
Slab
Concrete
Length
32 ft
1 main span
Daily traffic
1,000
2024 count
Owner
County
County Highway Agency

About this bridge

FAS 862 over Little Marys River is a concrete slab carrying FAS 862 over Little Marys River in Randolph County, Illinois. It was built in 1962, so it is 63 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 1,000 vehicles a day, roughly 11% of them trucks, projected to reach 1,162 by 2046. The structure is 32 ft (9.8 m) long and 33 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesFAS 862
CrossesLittle Marys River
Location862 over Little Mary
RouteCounty Highway 0
Coordinates38.08897, -89.74322
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
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 protection7 GoodSome minor problems.
Last inspectionJanuary 2025
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 geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating71.4 US tons
Inventory rating42.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length32 ft (9.8 m)
Longest span31 ft (9.4 m)
Deck width33 ft (10.2 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2024)
Projected traffic1,162 by 2046
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 862 over Little Marys River built?

It was built in 1962, making it 63 years old in 2025.

What condition is FAS 862 over Little Marys River 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 January 2025.

How much traffic does FAS 862 over Little Marys River carry?

About 1,000 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is FAS 862 over Little Marys River?

The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.4 m) and a deck 33 ft wide.

Who owns FAS 862 over Little Marys River?

It is owned by the County Highway Agency.