US Bridges

Ill 29 over Main Ditch Trib

Fair

Tazewell County, Illinois · 3 MI S of Ill 122 · Structure no. 090200400000000

Built
1962
63 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete Continuous
Length
27 ft
3 main spans
Daily traffic
1,150
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 29 over Main Ditch Trib is a concrete continuous culvert carrying Ill 29 over Main Ditch Trib in Tazewell County, Illinois. It was built in 1962, so it is 63 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,150 vehicles a day, roughly 29% of them trucks, projected to reach 1,616 by 2046. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 21.1 mi (34 km).

Location

Open in Google Maps
CarriesIll 29
CrossesMain Ditch Trib
Location3 MI S of Ill 122
RouteState Highway 29
CountyTazewell County
StateIllinois
Coordinates40.3269, -89.64072
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating27.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span10 ft (3.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,150 (2023)
Projected traffic1,616 by 2046
Trucks29%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Ill 29 over Main Ditch Trib built?

It was built in 1962, making it 63 years old in 2025.

What condition is Ill 29 over Main Ditch Trib in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in December 2023.

How much traffic does Ill 29 over Main Ditch Trib carry?

About 1,150 vehicles per day (2023 count), of which roughly 29% are trucks.

How long is Ill 29 over Main Ditch Trib?

The structure is 27 ft (8.2 m) long with a longest span of 10 ft (3.1 m).

Who owns Ill 29 over Main Ditch Trib?

It is owned by the State Highway Agency.