US Bridges

SE 30th RD over Trib N Fk Spring R

FairPosted for load

Barton County, Missouri · S 9 T 31 N R 29 W · Structure no. 23340

Built
1930
95 years old, rebuilt 1990
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
22 ft
1 main span
Daily traffic
20
2023 count
Owner
County
County Highway Agency

About this bridge

SE 30th RD over Trib N Fk Spring R is a steel stringer/multi-beam or girder carrying SE 30th RD over Trib N Fk Spring R in Barton County, Missouri. It was built in 1930 and reconstructed in 1990, 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 6 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 20 vehicles a day, roughly 10% of them trucks, projected to reach 28 by 2043. The structure is 22 ft (6.7 m) long and 22 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesSE 30th RD
CrossesTrib N Fk Spring R
LocationS 9 T 31 N R 29 W
RouteCounty Highway 404
CountyBarton County
StateMissouri
Coordinates37.45179, -94.11546
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating24.8 US tons
Inventory rating17.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length22 ft (6.7 m)
Longest span22 ft (6.7 m)
Deck width22 ft (6.7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2023)
Projected traffic28 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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SE 30th RD over Trib N Fk Spring R built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1990.

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

About 20 vehicles per day (2023 count), of which roughly 10% are trucks.

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

The structure is 22 ft (6.7 m) long with a longest span of 22 ft (6.7 m) and a deck 22 ft wide.

Who owns SE 30th RD over Trib N Fk Spring R?

It is owned by the County Highway Agency.