US Bridges

FAS 549 (ch 20) over South Fork Creek

Good

Macon County, Illinois · .5 MI E Warrensburg · Structure no. 058336000000000

Built
2002
23 years old
Condition
Good
inspected January 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
47 ft
1 main span
Daily traffic
1,350
2020 count
Owner
County
County Highway Agency

About this bridge

FAS 549 (ch 20) over South Fork Creek is a prestressed concrete box beam or girders - multiple carrying FAS 549 (ch 20) over South Fork Creek in Macon County, Illinois. It was built in 2002, so it is 23 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,350 vehicles a day, roughly 3% of them trucks, projected to reach 1,364 by 2046. The structure is 47 ft (14.4 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFAS 549 (ch 20)
CrossesSouth Fork Creek
Location.5 MI E Warrensburg
RouteCounty Highway 0
Coordinates39.9333, -89.05153
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating73.2 US tons
Inventory rating44 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length47 ft (14.4 m)
Longest span45 ft (13.6 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,350 (2020)
Projected traffic1,364 by 2046
Trucks3%
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 549 (ch 20) over South Fork Creek built?

It was built in 2002, making it 23 years old in 2025.

What condition is FAS 549 (ch 20) over South Fork Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.

How much traffic does FAS 549 (ch 20) over South Fork Creek carry?

About 1,350 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is FAS 549 (ch 20) over South Fork Creek?

The structure is 47 ft (14.4 m) long with a longest span of 45 ft (13.6 m) and a deck 30 ft wide.

Who owns FAS 549 (ch 20) over South Fork Creek?

It is owned by the County Highway Agency.