US Bridges

Tanager Road over Trib to Little Muddy Riv

Good

Franklin County, Illinois · 2.5 MI N of Royalton · Structure no. 028342400000000

Built
2023
2 years old
Condition
Good
inspected December 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
47 ft
1 main span
Daily traffic
20
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Tanager Road over Trib to Little Muddy Riv is a prestressed concrete box beam or girders - multiple carrying Tanager Road over Trib to Little Muddy Riv in Franklin 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 20 vehicles a day, roughly 10% of them trucks, projected to reach 32 by 2040. The structure is 47 ft (14.3 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesTanager Road
CrossesTrib to Little Muddy Riv
Location2.5 MI N of Royalton
RouteCounty Highway 0
Coordinates37.91775, -89.13519
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
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.2 US tons
Inventory rating41.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length47 ft (14.3 m)
Longest span44 ft (13.4 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2024)
Projected traffic32 by 2040
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Tanager Road over Trib to Little Muddy Riv built?

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

What condition is Tanager Road over Trib to Little Muddy Riv 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 December 2023.

How much traffic does Tanager Road over Trib to Little Muddy Riv carry?

About 20 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Tanager Road over Trib to Little Muddy Riv?

The structure is 47 ft (14.3 m) long with a longest span of 44 ft (13.4 m) and a deck 24 ft wide.

Who owns Tanager Road over Trib to Little Muddy Riv?

It is owned by the Town or Township Highway Agency.