US Bridges

CO RD NW 50 over S Fk Blackwater Rv

Fair

Johnson County, Missouri · S 22 T 46 N R 28 W · Structure no. 20881

Built
2000
25 years old
Condition
Fair
inspected November 2024
Type
Tee Beam
Prestressed Concrete
Length
130 ft
3 main spans
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

CO RD NW 50 over S Fk Blackwater Rv is a prestressed concrete tee beam carrying CO RD NW 50 over S Fk Blackwater Rv in Johnson County, Missouri. It was built in 2000, so it is 25 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.

It carries about 50 vehicles a day, roughly 10% of them trucks, projected to reach 80 by 2043. The structure is 130 ft (39.6 m) long and 25 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesCO RD NW 50
CrossesS Fk Blackwater Rv
LocationS 22 T 46 N R 28 W
RouteCounty Highway 278
CountyJohnson County
StateMissouri
Coordinates38.77655, -93.99533
Functional classRural Minor Collector

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating65.5 US tons
Inventory rating39.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length130 ft (39.6 m)
Longest span50 ft (15.2 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic80 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 CO RD NW 50 over S Fk Blackwater Rv built?

It was built in 2000, making it 25 years old in 2025.

What condition is CO RD NW 50 over S Fk Blackwater Rv 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 November 2024.

How much traffic does CO RD NW 50 over S Fk Blackwater Rv carry?

About 50 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is CO RD NW 50 over S Fk Blackwater Rv?

The structure is 130 ft (39.6 m) long with a longest span of 50 ft (15.2 m) and a deck 25 ft wide.

Who owns CO RD NW 50 over S Fk Blackwater Rv?

It is owned by the County Highway Agency.