US Bridges

Il 29 over Locust Creek Trib.

Fair

Christian County, Illinois · .25M SE Millersville · Structure no. 011001200000000

Built
1924
101 years old, rebuilt 1958
Condition
Fair
inspected December 2024
Type
Slab
Concrete
Length
32 ft
1 main span
Daily traffic
3,750
2023 count
Owner
State
State Highway Agency

About this bridge

Il 29 over Locust Creek Trib. is a concrete slab carrying Il 29 over Locust Creek Trib. in Christian County, Illinois. It was built in 1924 and reconstructed in 1958, so it is 101 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 5 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 3,750 vehicles a day, roughly 13% of them trucks, projected to reach 4,343 by 2046. The structure is 32 ft (9.8 m) long and 46 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

Location

Open in Google Maps
CarriesIl 29
CrossesLocust Creek Trib.
Location.25M SE Millersville
RouteState Highway 29
CountyChristian County
StateIllinois
Coordinates39.44783, -89.15444
Functional classRural Principal Arterial - Other

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating32.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length32 ft (9.8 m)
Longest span31 ft (9.4 m)
Deck width46 ft (14.1 m)
Roadway width43 ft (13.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,750 (2023)
Projected traffic4,343 by 2046
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 km)
TollOn a free road
National Highway SystemYes

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 Il 29 over Locust Creek Trib. built?

It was built in 1924, making it 101 years old in 2025. It was reconstructed in 1958.

What condition is Il 29 over Locust Creek 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 2024.

How much traffic does Il 29 over Locust Creek Trib. carry?

About 3,750 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is Il 29 over Locust Creek Trib.?

The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.4 m) and a deck 46 ft wide.

Who owns Il 29 over Locust Creek Trib.?

It is owned by the State Highway Agency.