US Bridges

FAS 637 (ch 21) over Br of Flat Branch

Good

Shelby County, Illinois · 2 MI E of Moweaqua · Structure no. 087360100000000

Built
2023
2 years old
Condition
Good
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
800
2024 count
Owner
County
County Highway Agency

About this bridge

FAS 637 (ch 21) over Br of Flat Branch is a prestressed concrete box beam or girders - multiple carrying FAS 637 (ch 21) over Br of Flat Branch in Shelby County, Illinois. It was built in 2023, so it is 2 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 800 vehicles a day, roughly 11% of them trucks, projected to reach 808 by 2046. The structure is 60 ft (18.3 m) long and 28 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesFAS 637 (ch 21)
CrossesBr of Flat Branch
Location2 MI E of Moweaqua
RouteCounty Highway 0
CountyShelby County
StateIllinois
Coordinates39.62445, -88.97192
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
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.7 US tons
Inventory rating53.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length60 ft (18.3 m)
Longest span57 ft (17.3 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic800 (2024)
Projected traffic808 by 2046
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 637 (ch 21) over Br of Flat Branch built?

It was built in 2023, making it 2 years old in 2025.

What condition is FAS 637 (ch 21) over Br of Flat Branch 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 October 2023.

How much traffic does FAS 637 (ch 21) over Br of Flat Branch carry?

About 800 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is FAS 637 (ch 21) over Br of Flat Branch?

The structure is 60 ft (18.3 m) long with a longest span of 57 ft (17.3 m) and a deck 28 ft wide.

Who owns FAS 637 (ch 21) over Br of Flat Branch?

It is owned by the County Highway Agency.