US Bridges

County RD 622 over Lake Dtch CR

FairPosted for load

Osage County, Missouri · S 1 T 42 N R 9 W · Structure no. 17087

Built
1930
95 years old, rebuilt 2006
Condition
Fair
inspected April 2023
Type
Girder and Floorbeam System
Steel
Length
32 ft
1 main span
Daily traffic
10
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 622 over Lake Dtch CR is a steel girder and floorbeam system carrying County RD 622 over Lake Dtch CR in Osage County, Missouri. It was built in 1930 and reconstructed in 2006, so it is 95 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. Its operating status is: posted for load restriction.

It carries about 10 vehicles a day, roughly 10% of them trucks, projected to reach 14 by 2043. The structure is 32 ft (9.8 m) long and 15 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesCounty RD 622
CrossesLake Dtch CR
LocationS 1 T 42 N R 9 W
RouteCounty Highway 142
CountyOsage County
StateMissouri
Coordinates38.41794, -91.87356
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating19.8 US tons
Inventory rating11.9 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length32 ft (9.8 m)
Longest span28 ft (8.6 m)
Deck width15 ft (4.6 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2023)
Projected traffic14 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 622 over Lake Dtch CR built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 2006.

What condition is County RD 622 over Lake Dtch 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 April 2023.

How much traffic does County RD 622 over Lake Dtch CR carry?

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

How long is County RD 622 over Lake Dtch CR?

The structure is 32 ft (9.8 m) long with a longest span of 28 ft (8.6 m) and a deck 15 ft wide.

Who owns County RD 622 over Lake Dtch CR?

It is owned by the County Highway Agency.