US Bridges

TR 29 Shellabarger over Ditch

Good

Macon County, Illinois · 1 Mi. N Warrensburg · Structure no. 058506400000000

Built
2019
6 years old
Condition
Good
inspected January 2022
Type
Culvert
Concrete
Length
24 ft
Daily traffic
25
2020 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 29 Shellabarger over Ditch is a concrete culvert carrying TR 29 Shellabarger over Ditch in Macon County, Illinois. It was built in 2019, so it is 6 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 25 vehicles a day, roughly 8% of them trucks, projected to reach 25 by 2046. The structure is 24 ft (7.2 m) long and 22 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

Open in Google Maps
CarriesTR 29 Shellabarger
CrossesDitch
Location1 Mi. N Warrensburg
RouteCounty Highway 0
CountyMacon County
StateIllinois
Coordinates39.94783, -89.05265
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
Channel and channel protection9 ExcellentNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionJanuary 2022
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 rating58.2 US tons
Inventory rating44.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans0
Design loadHS 25 or greater
Structure length24 ft (7.2 m)
Longest span11 ft (3.3 m)
Deck width22 ft (6.7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2020)
Projected traffic25 by 2046
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 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 29 Shellabarger over Ditch built?

It was built in 2019, making it 6 years old in 2025.

What condition is TR 29 Shellabarger over Ditch 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 2022.

How much traffic does TR 29 Shellabarger over Ditch carry?

About 25 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is TR 29 Shellabarger over Ditch?

The structure is 24 ft (7.2 m) long with a longest span of 11 ft (3.3 m) and a deck 22 ft wide.

Who owns TR 29 Shellabarger over Ditch?

It is owned by the Town or Township Highway Agency.