US Bridges

Ch 1/FAS 645 over S. Fork Sangamon R.

Fair

Christian County, Illinois · 11.5MI S Taylorvle · Structure no. 011336600000000

Built
1993
32 years old
Condition
Fair
inspected December 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
121 ft
3 main spans
Daily traffic
1,900
2021 count
Owner
County
County Highway Agency

About this bridge

Ch 1/FAS 645 over S. Fork Sangamon R. is a prestressed concrete box beam or girders - multiple carrying Ch 1/FAS 645 over S. Fork Sangamon R. in Christian County, Illinois. It was built in 1993, so it is 32 years old, younger 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 1,900 vehicles a day, roughly 38% of them trucks, projected to reach 1,919 by 2046. The structure is 121 ft (36.8 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCh 1/FAS 645
CrossesS. Fork Sangamon R.
Location11.5MI S Taylorvle
RouteCounty Highway 0
CountyChristian County
StateIllinois
Coordinates39.37511, -89.29256
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: 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 rating66 US tons
Inventory rating39.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length121 ft (36.8 m)
Longest span65 ft (19.8 m)
Deck width32 ft (9.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,900 (2021)
Projected traffic1,919 by 2046
Trucks38%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Ch 1/FAS 645 over S. Fork Sangamon R. built?

It was built in 1993, making it 32 years old in 2025.

What condition is Ch 1/FAS 645 over S. Fork Sangamon R. 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 December 2024.

How much traffic does Ch 1/FAS 645 over S. Fork Sangamon R. carry?

About 1,900 vehicles per day (2021 count), of which roughly 38% are trucks.

How long is Ch 1/FAS 645 over S. Fork Sangamon R.?

The structure is 121 ft (36.8 m) long with a longest span of 65 ft (19.8 m) and a deck 32 ft wide.

Who owns Ch 1/FAS 645 over S. Fork Sangamon R.?

It is owned by the County Highway Agency.