US Bridges

CH-29 over Long Grove Crk Trib

Fair

Shelby County, Illinois · 1.5 MI NW Moweaqua · Structure no. 087341900000000

Built
1983
42 years old
Condition
Fair
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
43 ft
1 main span
Daily traffic
200
2024 count
Owner
County
County Highway Agency

About this bridge

CH-29 over Long Grove Crk Trib is a prestressed concrete box beam or girders - multiple carrying CH-29 over Long Grove Crk Trib in Shelby County, Illinois. It was built in 1983, so it is 42 years old, younger 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 200 vehicles a day, roughly 5% of them trucks, projected to reach 126 by 2046. The structure is 43 ft (13.2 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCH-29
CrossesLong Grove Crk Trib
Location1.5 MI NW Moweaqua
RouteCounty Highway 0
CountyShelby County
StateIllinois
Coordinates39.65427, -89.01337
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.3 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length43 ft (13.2 m)
Longest span41 ft (12.4 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2024)
Projected traffic126 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 CH-29 over Long Grove Crk Trib built?

It was built in 1983, making it 42 years old in 2025.

What condition is CH-29 over Long Grove Crk 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 April 2023.

How much traffic does CH-29 over Long Grove Crk Trib carry?

About 200 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is CH-29 over Long Grove Crk Trib?

The structure is 43 ft (13.2 m) long with a longest span of 41 ft (12.4 m) and a deck 24 ft wide.

Who owns CH-29 over Long Grove Crk Trib?

It is owned by the County Highway Agency.