US Bridges

County RD 429 over Prairie Fk CR

Fair

Howard County, Missouri · S 14 T 49 N R 15 W · Structure no. 15182

Built
1998
27 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
85 ft
1 main span
Daily traffic
70
2024 count
Owner
County
County Highway Agency

About this bridge

County RD 429 over Prairie Fk CR is a steel stringer/multi-beam or girder carrying County RD 429 over Prairie Fk CR in Howard County, Missouri. It was built in 1998, so it is 27 years old, younger than the Missouri average of 45.1 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 70 vehicles a day, roughly 10% of them trucks, projected to reach 77 by 2044. The structure is 85 ft (25.9 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCounty RD 429
CrossesPrairie Fk CR
LocationS 14 T 49 N R 15 W
RouteCounty Highway 87
CountyHoward County
StateMissouri
Coordinates39.03471, -92.57014
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating91.3 US tons
Inventory rating49.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length85 ft (25.9 m)
Longest span83 ft (25.3 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70 (2024)
Projected traffic77 by 2044
Trucks10%
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 County RD 429 over Prairie Fk CR built?

It was built in 1998, making it 27 years old in 2025.

What condition is County RD 429 over Prairie Fk CR 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 February 2024.

How much traffic does County RD 429 over Prairie Fk CR carry?

About 70 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD 429 over Prairie Fk CR?

The structure is 85 ft (25.9 m) long with a longest span of 83 ft (25.3 m) and a deck 24 ft wide.

Who owns County RD 429 over Prairie Fk CR?

It is owned by the County Highway Agency.