US Bridges

Rock RD over Prairie Hollow CR

Good

Wright County, Missouri · S 29 T 28 N R 15 W · Structure no. 20001

Built
1994
31 years old
Condition
Good
inspected December 2024
Type
Slab
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

Rock RD over Prairie Hollow CR is a concrete continuous slab carrying Rock RD over Prairie Hollow CR in Wright County, Missouri. It was built in 1994, so it is 31 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, roughly 10% of them trucks, projected to reach 70 by 2043. The structure is 22 ft (6.7 m) long and 22 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesRock RD
CrossesPrairie Hollow CR
LocationS 29 T 28 N R 15 W
RouteCounty Highway 243
CountyWright County
StateMissouri
Coordinates37.09248, -92.59762
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2024
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 rating50.6 US tons
Inventory rating29.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadOther
Structure length22 ft (6.7 m)
Longest span11 ft (3.4 m)
Deck width22 ft (6.8 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic70 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Rock RD over Prairie Hollow CR built?

It was built in 1994, making it 31 years old in 2025.

What condition is Rock RD over Prairie Hollow CR 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 December 2024.

How much traffic does Rock RD over Prairie Hollow CR carry?

About 50 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Rock RD over Prairie Hollow CR?

The structure is 22 ft (6.7 m) long with a longest span of 11 ft (3.4 m) and a deck 22 ft wide.

Who owns Rock RD over Prairie Hollow CR?

It is owned by the County Highway Agency.