US Bridges

Dorsett Hill RD over Black CR

Fair

Cass County, Missouri · S 35 T 43 N R 32 W · Structure no. 24672

Built
1996
29 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
71 ft
1 main span
Daily traffic
45
2024 count
Owner
County
County Highway Agency

About this bridge

Dorsett Hill RD over Black CR is a steel stringer/multi-beam or girder carrying Dorsett Hill RD over Black CR in Cass County, Missouri. It was built in 1996, so it is 29 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 5 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 45 vehicles a day, roughly 5% of them trucks, projected to reach 72 by 2044. The structure is 71 ft (21.6 m) long and 23 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesDorsett Hill RD
CrossesBlack CR
LocationS 35 T 43 N R 32 W
RouteCounty Highway 530
CountyCass County
StateMissouri
Coordinates38.48453, -94.42772
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 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 rating43.7 US tons
Inventory rating25.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length71 ft (21.6 m)
Longest span67 ft (20.4 m)
Deck width23 ft (6.9 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45 (2024)
Projected traffic72 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Dorsett Hill RD over Black CR built?

It was built in 1996, making it 29 years old in 2025.

What condition is Dorsett Hill RD over Black 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 April 2023.

How much traffic does Dorsett Hill RD over Black CR carry?

About 45 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Dorsett Hill RD over Black CR?

The structure is 71 ft (21.6 m) long with a longest span of 67 ft (20.4 m) and a deck 23 ft wide.

Who owns Dorsett Hill RD over Black CR?

It is owned by the County Highway Agency.