US Bridges

Linn RD over Trib to Big Muddy

Good

Franklin County, Illinois · 0.30MI E ST Joseph R · Structure no. 028340400000000

Built
2010
15 years old
Condition
Good
inspected January 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
41 ft
1 main span
Daily traffic
150
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Linn RD over Trib to Big Muddy is a prestressed concrete box beam or girders - multiple carrying Linn RD over Trib to Big Muddy in Franklin County, Illinois. It was built in 2010, so it is 15 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 15% of them trucks, projected to reach 152 by 2046. The structure is 41 ft (12.6 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLinn RD
CrossesTrib to Big Muddy
Location0.30MI E ST Joseph R
RouteCounty Highway 0
Coordinates37.97951, -88.94601
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 protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
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 adequacy9: Superior 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 25 or greater
Structure length41 ft (12.6 m)
Longest span39 ft (11.9 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 traffic152 by 2046
Trucks15%
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 Linn RD over Trib to Big Muddy built?

It was built in 2010, making it 15 years old in 2025.

What condition is Linn RD over Trib to Big Muddy 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 2024.

How much traffic does Linn RD over Trib to Big Muddy carry?

About 150 vehicles per day (2024 count), of which roughly 15% are trucks.

How long is Linn RD over Trib to Big Muddy?

The structure is 41 ft (12.6 m) long with a longest span of 39 ft (11.9 m) and a deck 24 ft wide.

Who owns Linn RD over Trib to Big Muddy?

It is owned by the Town or Township Highway Agency.