US Bridges

County RD 1185 over Trib Turnback CR

FairPosted for load

Lawrence County, Missouri · S 1 T 29 N R 26 W · Structure no. 14336

Built
1931
94 years old
Condition
Fair
inspected March 2023
Type
Slab
Concrete
Length
26 ft
1 main span
Daily traffic
40
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 1185 over Trib Turnback CR is a concrete slab carrying County RD 1185 over Trib Turnback CR in Lawrence 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. Its operating status is: posted for load restriction.

It carries about 40 vehicles a day, roughly 10% of them trucks, projected to reach 56 by 2043. The structure is 26 ft (7.9 m) long and 14 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCounty RD 1185
CrossesTrib Turnback CR
LocationS 1 T 29 N R 26 W
RouteCounty Highway 64
CountyLawrence County
StateMissouri
Coordinates37.26966, -93.72361
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating23.8 US tons
Inventory rating9.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 10
Structure length26 ft (7.9 m)
Longest span25 ft (7.6 m)
Deck width14 ft (4.3 m)
Roadway width13 ft (4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2023)
Projected traffic56 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$255,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 1185 over Trib Turnback CR built?

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

What condition is County RD 1185 over Trib Turnback 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 March 2023.

How much traffic does County RD 1185 over Trib Turnback CR carry?

About 40 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 1185 over Trib Turnback CR?

The structure is 26 ft (7.9 m) long with a longest span of 25 ft (7.6 m) and a deck 14 ft wide.

Who owns County RD 1185 over Trib Turnback CR?

It is owned by the County Highway Agency.