US Bridges

Rock Creek Pkwy over Rock CR

Fair

Clay County, Missouri · S 15 T 50 N R 33 W · Structure no. 21542

Built
1975
50 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete
Length
38 ft
3 main spans
Daily traffic
3,000
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Rock Creek Pkwy over Rock CR is a concrete culvert carrying Rock Creek Pkwy over Rock CR in Clay County, Missouri. It was built in 1975, so it is 50 years old, older 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 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 3,000 vehicles a day, roughly 10% of them trucks, projected to reach 4,800 by 2044. The structure is 38 ft (11.6 m) long. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesRock Creek Pkwy
CrossesRock CR
LocationS 15 T 50 N R 33 W
RouteCity Street 0
CountyClay County
StateMissouri
Coordinates39.14873, -94.54774
Functional classUrban 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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadOther
Structure length38 ft (11.6 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,000 (2024)
Projected traffic4,800 by 2044
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Creek Pkwy over Rock CR built?

It was built in 1975, making it 50 years old in 2025.

What condition is Rock Creek Pkwy over Rock 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 December 2023.

How much traffic does Rock Creek Pkwy over Rock CR carry?

About 3,000 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Rock Creek Pkwy over Rock CR?

The structure is 38 ft (11.6 m) long with a longest span of 12 ft (3.7 m).

Who owns Rock Creek Pkwy over Rock CR?

It is owned by the City or Municipal Highway Agency.