US Bridges

Mo 92 E over Rock CR

Fair

Clay County, Missouri · S 30 T 53 N R 31 W · Structure no. 347

Built
1960
65 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
3,631
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 92 E over Rock CR is a concrete continuous culvert carrying Mo 92 E over Rock CR in Clay County, Missouri. It was built in 1960, so it is 65 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 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 3,631 vehicles a day, roughly 9% of them trucks, projected to reach 6,536 by 2044. The structure is 21 ft (6.3 m) long and 47 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesMo 92 E
CrossesRock CR
LocationS 30 T 53 N R 31 W
RouteState Highway 92
CountyClay County
StateMissouri
Coordinates39.36803, -94.42195
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.3 US tons
Inventory rating49.6 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,631 (2024)
Projected traffic6,536 by 2044
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 Mo 92 E over Rock CR built?

It was built in 1960, making it 65 years old in 2025.

What condition is Mo 92 E 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 November 2024.

How much traffic does Mo 92 E over Rock CR carry?

About 3,631 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is Mo 92 E over Rock CR?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m) and a deck 47 ft wide.

Who owns Mo 92 E over Rock CR?

It is owned by the State Highway Agency.