US Bridges

Mo 185 S over Rabbit Br

Fair

Washington County, Missouri · S 14 T 38 N R 1 E · Structure no. 9667

Built
1941
84 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete Continuous
Length
28 ft
2 main spans
Daily traffic
706
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 185 S over Rabbit Br is a concrete continuous culvert carrying Mo 185 S over Rabbit Br in Washington County, Missouri. It was built in 1941, so it is 84 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 5 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 706 vehicles a day, roughly 12% of them trucks, projected to reach 988 by 2044. The structure is 28 ft (8.4 m) long and 29 ft wide. If it were closed, the detour would be 44.7 mi (72 km).

Location

Open in Google Maps
CarriesMo 185 S
CrossesRabbit Br
LocationS 14 T 38 N R 1 E
RouteState Highway 185
CountyWashington County
StateMissouri
Coordinates38.01855, -90.88976
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating43.7 US tons
Inventory rating25.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 10
Structure length28 ft (8.4 m)
Longest span12 ft (3.7 m)
Deck width29 ft (8.7 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic706 (2024)
Projected traffic988 by 2044
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed44.7 mi (72 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 Mo 185 S over Rabbit Br built?

It was built in 1941, making it 84 years old in 2025.

What condition is Mo 185 S over Rabbit 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 June 2024.

How much traffic does Mo 185 S over Rabbit Br carry?

About 706 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is Mo 185 S over Rabbit Br?

The structure is 28 ft (8.4 m) long with a longest span of 12 ft (3.7 m) and a deck 29 ft wide.

Who owns Mo 185 S over Rabbit Br?

It is owned by the State Highway Agency.