US Bridges

FAP-777 (ILL-185) over Stream

Fair

Fayette County, Illinois · 4 MI NW Vandalia · Structure no. 026201400000000

Built
1931
94 years old, rebuilt 1980
Condition
Fair
inspected August 2023
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
2,550
2023 count
Owner
State
State Highway Agency

About this bridge

FAP-777 (ILL-185) over Stream is a concrete culvert carrying FAP-777 (ILL-185) over Stream in Fayette County, Illinois. It was built in 1931 and reconstructed in 1980, so it is 94 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 2,550 vehicles a day, roughly 11% of them trucks, projected to reach 3,213 by 2046. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 39.8 mi (64 km).

Location

Open in Google Maps
CarriesFAP-777 (ILL-185)
CrossesStream
Location4 MI NW Vandalia
RouteState Highway 185
CountyFayette County
StateIllinois
Coordinates39.01361, -89.17508
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span11 ft (3.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,550 (2023)
Projected traffic3,213 by 2046
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.8 mi (64 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 FAP-777 (ILL-185) over Stream built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1980.

What condition is FAP-777 (ILL-185) over Stream 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 August 2023.

How much traffic does FAP-777 (ILL-185) over Stream carry?

About 2,550 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is FAP-777 (ILL-185) over Stream?

The structure is 22 ft (6.7 m) long with a longest span of 11 ft (3.3 m).

Who owns FAP-777 (ILL-185) over Stream?

It is owned by the State Highway Agency.