US Bridges

SW Sampson RD over Contrary CR

Good

Buchanan County, Missouri · S 1 T 55 N R 36 W · Structure no. 20759

Built
1998
27 years old
Condition
Good
inspected January 2023
Type
Tee Beam
Prestressed Concrete Continuous
Length
149 ft
3 main spans
Daily traffic
25
2024 count
Owner
County
County Highway Agency

About this bridge

SW Sampson RD over Contrary CR is a prestressed concrete continuous tee beam carrying SW Sampson RD over Contrary CR in Buchanan County, Missouri. It was built in 1998, so it is 27 years old, younger 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 25 vehicles a day, roughly 10% of them trucks, projected to reach 29 by 2044. The structure is 149 ft (45.4 m) long and 23 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesSW Sampson RD
CrossesContrary CR
LocationS 1 T 55 N R 36 W
RouteCounty Highway 273
Coordinates39.59863, -94.89108
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 inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84.3 US tons
Inventory rating50.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length149 ft (45.4 m)
Longest span48 ft (14.6 m)
Deck width23 ft (6.9 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2024)
Projected traffic29 by 2044
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 SW Sampson RD over Contrary CR built?

It was built in 1998, making it 27 years old in 2025.

What condition is SW Sampson RD over Contrary 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 January 2023.

How much traffic does SW Sampson RD over Contrary CR carry?

About 25 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is SW Sampson RD over Contrary CR?

The structure is 149 ft (45.4 m) long with a longest span of 48 ft (14.6 m) and a deck 23 ft wide.

Who owns SW Sampson RD over Contrary CR?

It is owned by the County Highway Agency.