US Bridges

FAS 946 over Pigeon Roost Creek

Fair

Alexander County, Illinois · Olive Branch · Structure no. 002500500000000

Built
1900
125 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
350
2022 count
Owner
County
County Highway Agency

About this bridge

FAS 946 over Pigeon Roost Creek is a concrete culvert carrying FAS 946 over Pigeon Roost Creek in Alexander County, Illinois. It was built in 1900, so it is 125 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 6 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 350 vehicles a day, roughly 9% of them trucks, projected to reach 606 by 2046. The structure is 24 ft (7.2 m) long and 30 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesFAS 946
CrossesPigeon Roost Creek
LocationOlive Branch
RouteCounty Highway 0
CountyAlexander County
StateIllinois
Coordinates37.16748, -89.35357
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81 US tons
Inventory rating48.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length24 ft (7.2 m)
Longest span11 ft (3.4 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (2022)
Projected traffic606 by 2046
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 946 over Pigeon Roost Creek built?

It was built in 1900, making it 125 years old in 2025.

What condition is FAS 946 over Pigeon Roost 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 November 2023.

How much traffic does FAS 946 over Pigeon Roost Creek carry?

About 350 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is FAS 946 over Pigeon Roost Creek?

The structure is 24 ft (7.2 m) long with a longest span of 11 ft (3.4 m) and a deck 30 ft wide.

Who owns FAS 946 over Pigeon Roost Creek?

It is owned by the County Highway Agency.