US Bridges

Minor RD over Van Dorsen CR

Good

Linn County, Missouri · S 26 T 57 N R 18 W · Structure no. 24144

Built
1950
75 years old, rebuilt 1985
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
45 ft
2 main spans
Daily traffic
30
2024 count
Owner
County
County Highway Agency

About this bridge

Minor RD over Van Dorsen CR is a steel stringer/multi-beam or girder carrying Minor RD over Van Dorsen CR in Linn County, Missouri. It was built in 1950 and reconstructed in 1985, so it is 75 years old, older 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 7 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 33 by 2044. The structure is 45 ft (13.7 m) long and 16 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesMinor RD
CrossesVan Dorsen CR
LocationS 26 T 57 N R 18 W
RouteCounty Highway 460
Coordinates39.72979, -92.88011
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating43.7 US tons
Inventory rating25.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadOther
Structure length45 ft (13.7 m)
Longest span29 ft (8.8 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2024)
Projected traffic33 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$249,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Minor RD over Van Dorsen CR built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1985.

What condition is Minor RD over Van Dorsen CR 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 November 2024.

How much traffic does Minor RD over Van Dorsen CR carry?

About 30 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Minor RD over Van Dorsen CR?

The structure is 45 ft (13.7 m) long with a longest span of 29 ft (8.8 m) and a deck 16 ft wide.

Who owns Minor RD over Van Dorsen CR?

It is owned by the County Highway Agency.