US Bridges

SW 30th RD over Trib Lit North Fk

Fair

Barton County, Missouri · S 3 T 31 N R 33 W · Structure no. 23227

Built
1990
35 years old
Condition
Fair
inspected March 2023
Type
Slab
Concrete Continuous
Length
31 ft
2 main spans
Daily traffic
40
2023 count
Owner
County
County Highway Agency

About this bridge

SW 30th RD over Trib Lit North Fk is a concrete continuous slab carrying SW 30th RD over Trib Lit North Fk in Barton County, Missouri. It was built in 1990, so it is 35 years old, younger 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 40 vehicles a day, roughly 10% of them trucks, projected to reach 56 by 2043. The structure is 31 ft (9.4 m) long and 21 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSW 30th RD
CrossesTrib Lit North Fk
LocationS 3 T 31 N R 33 W
RouteCounty Highway 397
CountyBarton County
StateMissouri
Coordinates37.46341, -94.54996
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadOther
Structure length31 ft (9.4 m)
Longest span15 ft (4.6 m)
Deck width21 ft (6.3 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2023)
Projected traffic56 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 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 SW 30th RD over Trib Lit North Fk built?

It was built in 1990, making it 35 years old in 2025.

What condition is SW 30th RD over Trib Lit North Fk 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 30th RD over Trib Lit North Fk carry?

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

How long is SW 30th RD over Trib Lit North Fk?

The structure is 31 ft (9.4 m) long with a longest span of 15 ft (4.6 m) and a deck 21 ft wide.

Who owns SW 30th RD over Trib Lit North Fk?

It is owned by the County Highway Agency.