US Bridges

Rt a S over Bock CR

Fair

Gasconade County, Missouri · S 29 T 42 N R 6 W · Structure no. 7461

Built
1951
74 years old
Condition
Fair
inspected September 2024
Type
Culvert
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
327
2024 count
Owner
State
State Highway Agency

About this bridge

Rt a S over Bock CR is a concrete continuous culvert carrying Rt a S over Bock CR in Gasconade County, Missouri. It was built in 1951, so it is 74 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 327 vehicles a day, roughly 4% of them trucks, projected to reach 425 by 2044. The structure is 29 ft (8.8 m) long and 32 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

CarriesRt a S
CrossesBock CR
LocationS 29 T 42 N R 6 W
RouteState Highway 0A
Coordinates38.35542, -91.62456
Functional classRural Major Collector

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating51.6 US tons
Inventory rating30.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 10
Structure length29 ft (8.8 m)
Longest span10 ft (3 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic327 (2024)
Projected traffic425 by 2044
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 km)
TollOn a free road
National Highway SystemNo

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 Rt a S over Bock CR built?

It was built in 1951, making it 74 years old in 2025.

What condition is Rt a S over Bock 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 September 2024.

How much traffic does Rt a S over Bock CR carry?

About 327 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Rt a S over Bock CR?

The structure is 29 ft (8.8 m) long with a longest span of 10 ft (3 m) and a deck 32 ft wide.

Who owns Rt a S over Bock CR?

It is owned by the State Highway Agency.