US Bridges

SE 30th LN over Dorris CR

FairPosted for load

Barton County, Missouri · S 20 T 31 N R 30 W · Structure no. 22544

Built
1991
34 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
52 ft
1 main span
Daily traffic
40
2023 count
Owner
County
County Highway Agency

About this bridge

SE 30th LN over Dorris CR is a steel stringer/multi-beam or girder carrying SE 30th LN over Dorris CR in Barton County, Missouri. It was built in 1991, so it is 34 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. Its operating status is: posted for load restriction.

It carries about 40 vehicles a day, roughly 10% of them trucks, projected to reach 56 by 2043. The structure is 52 ft (15.8 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSE 30th LN
CrossesDorris CR
LocationS 20 T 31 N R 30 W
RouteCounty Highway 361
CountyBarton County
StateMissouri
Coordinates37.41253, -94.24436
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating18.8 US tons
Inventory rating10.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadOther
Structure length52 ft (15.8 m)
Longest span31 ft (9.4 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.4 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 closed3.7 mi (6 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$283,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SE 30th LN over Dorris CR built?

It was built in 1991, making it 34 years old in 2025.

What condition is SE 30th LN over Dorris CR 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 LN over Dorris CR carry?

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

How long is SE 30th LN over Dorris CR?

The structure is 52 ft (15.8 m) long with a longest span of 31 ft (9.4 m) and a deck 24 ft wide.

Who owns SE 30th LN over Dorris CR?

It is owned by the County Highway Agency.