US Bridges

County RD 11 over Patten Br

Fair

Dade County, Missouri · S 25 T 33 N R 29 W · Structure no. 12189

Built
1931
94 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete
Length
25 ft
1 main span
Daily traffic
25
2024 count
Owner
County
County Highway Agency

About this bridge

County RD 11 over Patten Br is a concrete slab carrying County RD 11 over Patten Br in Dade County, Missouri. It was built in 1931, so it is 94 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 25 vehicles a day, roughly 10% of them trucks, projected to reach 29 by 2044. The structure is 25 ft (7.6 m) long and 16 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesCounty RD 11
CrossesPatten Br
LocationS 25 T 33 N R 29 W
RouteCounty Highway 2
CountyDade County
StateMissouri
Coordinates37.57277, -94.05717
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating24.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 10
Structure length25 ft (7.6 m)
Longest span24 ft (7.3 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2024)
Projected traffic29 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 11 over Patten Br built?

It was built in 1931, making it 94 years old in 2025.

What condition is County RD 11 over Patten Br 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 January 2024.

How much traffic does County RD 11 over Patten Br carry?

About 25 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD 11 over Patten Br?

The structure is 25 ft (7.6 m) long with a longest span of 24 ft (7.3 m) and a deck 16 ft wide.

Who owns County RD 11 over Patten Br?

It is owned by the County Highway Agency.