US Bridges

SE 30th RD over N Fk Spring Rvr

Fair

Barton County, Missouri · S 12 T 31 N R 31 W · Structure no. 23306

Built
1986
39 years old
Condition
Fair
inspected March 2023
Type
Tee Beam
Prestressed Concrete Continuous
Length
125 ft
3 main spans
Daily traffic
350
2023 count
Owner
County
County Highway Agency

About this bridge

SE 30th RD over N Fk Spring Rvr is a prestressed concrete continuous tee beam carrying SE 30th RD over N Fk Spring Rvr in Barton County, Missouri. It was built in 1986, so it is 39 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 350 vehicles a day, roughly 10% of them trucks, projected to reach 490 by 2043. The structure is 125 ft (38.1 m) long and 27 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesSE 30th RD
CrossesN Fk Spring Rvr
LocationS 12 T 31 N R 31 W
RouteCounty Highway 402
CountyBarton County
StateMissouri
Coordinates37.45663, -94.28201
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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
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 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 typeTee Beam
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length125 ft (38.1 m)
Longest span50 ft (15.2 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (2023)
Projected traffic490 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 SE 30th RD over N Fk Spring Rvr built?

It was built in 1986, making it 39 years old in 2025.

What condition is SE 30th RD over N Fk Spring Rvr 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 SE 30th RD over N Fk Spring Rvr carry?

About 350 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is SE 30th RD over N Fk Spring Rvr?

The structure is 125 ft (38.1 m) long with a longest span of 50 ft (15.2 m) and a deck 27 ft wide.

Who owns SE 30th RD over N Fk Spring Rvr?

It is owned by the County Highway Agency.