US Bridges

SW 30th RD over W Fk Spring Rvr

Good

Barton County, Missouri · S 6 T 31 N R 31 W · Structure no. 23274

Built
1989
36 years old
Condition
Good
inspected March 2023
Type
Tee Beam
Prestressed Concrete
Length
111 ft
3 main spans
Daily traffic
30
2023 count
Owner
County
County Highway Agency

About this bridge

SW 30th RD over W Fk Spring Rvr is a prestressed concrete tee beam carrying SW 30th RD over W Fk Spring Rvr in Barton County, Missouri. It was built in 1989, so it is 36 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 30 vehicles a day, roughly 10% of them trucks, projected to reach 42 by 2043. The structure is 111 ft (33.8 m) long and 27 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesSW 30th RD
CrossesW Fk Spring Rvr
LocationS 6 T 31 N R 31 W
RouteCounty Highway 399
Coordinates37.45897, -94.37949
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.4 US tons
Inventory rating37.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length111 ft (33.8 m)
Longest span40 ft (12.2 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 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 closed5 mi (8 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 W Fk Spring Rvr built?

It was built in 1989, making it 36 years old in 2025.

What condition is SW 30th RD over W Fk Spring Rvr in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.

How much traffic does SW 30th RD over W Fk Spring Rvr carry?

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

How long is SW 30th RD over W Fk Spring Rvr?

The structure is 111 ft (33.8 m) long with a longest span of 40 ft (12.2 m) and a deck 27 ft wide.

Who owns SW 30th RD over W Fk Spring Rvr?

It is owned by the County Highway Agency.