US Bridges

SW 85th RD over Trib N Fk Spring R

FairPosted for load

Barton County, Missouri · S 5 T 30 N R 31 W · Structure no. 24376

Built
1930
95 years old
Condition
Fair
inspected March 2023
Type
Slab
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
30
2023 count
Owner
County
County Highway Agency

About this bridge

SW 85th RD over Trib N Fk Spring R is a concrete continuous slab carrying SW 85th RD over Trib N Fk Spring R in Barton County, Missouri. It was built in 1930, 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 5 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 30 vehicles a day, roughly 10% of them trucks, projected to reach 42 by 2043. The structure is 23 ft (7 m) long and 23 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesSW 85th RD
CrossesTrib N Fk Spring R
LocationS 5 T 30 N R 31 W
RouteCounty Highway 484
Coordinates37.37769, -94.36858
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating21.8 US tons
Inventory rating12.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadOther
Structure length23 ft (7 m)
Longest span11 ft (3.4 m)
Deck width23 ft (6.9 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2023)
Projected traffic42 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-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 SW 85th RD over Trib N Fk Spring R built?

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

What condition is SW 85th RD over Trib N Fk Spring R 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 SW 85th RD over Trib N Fk Spring R carry?

About 30 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is SW 85th RD over Trib N Fk Spring R?

The structure is 23 ft (7 m) long with a longest span of 11 ft (3.4 m) and a deck 23 ft wide.

Who owns SW 85th RD over Trib N Fk Spring R?

It is owned by the County Highway Agency.