US Bridges

TR 21 over Sorghum Creek

Good

Shelby County, Illinois · 3 MI SE of Moweaqua · Structure no. 087350700000000

Built
1997
28 years old
Condition
Good
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
79 ft
1 main span
Daily traffic
150
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 21 over Sorghum Creek is a prestressed concrete box beam or girders - multiple carrying TR 21 over Sorghum Creek in Shelby County, Illinois. It was built in 1997, so it is 28 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 150 vehicles a day, roughly 3% of them trucks, projected to reach 101 by 2046. The structure is 79 ft (24.1 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesTR 21
CrossesSorghum Creek
Location3 MI SE of Moweaqua
RouteCounty Highway 0
Coordinates39.58134, -89.00532
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable 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 rating48.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length79 ft (24.1 m)
Longest span75 ft (23 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2024)
Projected traffic101 by 2046
Trucks3%
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

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 TR 21 over Sorghum Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is TR 21 over Sorghum 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 April 2023.

How much traffic does TR 21 over Sorghum Creek carry?

About 150 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is TR 21 over Sorghum Creek?

The structure is 79 ft (24.1 m) long with a longest span of 75 ft (23 m) and a deck 24 ft wide.

Who owns TR 21 over Sorghum Creek?

It is owned by the Town or Township Highway Agency.