US Bridges

FAS 639 over Simpsons Branch

FairPosted for load

Christian County, Illinois · 0.12 MI N Palmer · Structure no. 011501100000000

Built
1947
78 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
150
2021 count
Owner
County
County Highway Agency

About this bridge

FAS 639 over Simpsons Branch is a concrete continuous culvert carrying FAS 639 over Simpsons Branch in Christian County, Illinois. It was built in 1947, so it is 78 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. Its operating status is: posted for load restriction.

It carries about 150 vehicles a day, roughly 13% of them trucks, projected to reach 152 by 2046. The structure is 23 ft (7 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFAS 639
CrossesSimpsons Branch
Location0.12 MI N Palmer
RouteCounty Highway 0
CountyChristian County
StateIllinois
Coordinates39.46756, -89.40781
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.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27.9 US tons
Inventory rating19 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 15
Structure length23 ft (7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2021)
Projected traffic152 by 2046
Trucks13%
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 639 over Simpsons Branch built?

It was built in 1947, making it 78 years old in 2025.

What condition is FAS 639 over Simpsons Branch 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 2024.

How much traffic does FAS 639 over Simpsons Branch carry?

About 150 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is FAS 639 over Simpsons Branch?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m).

Who owns FAS 639 over Simpsons Branch?

It is owned by the County Highway Agency.