US Bridges

Blackstock over Trib of Beaver CR

Fair

McDonald County, Missouri · S 19 T 23 N R 32 W · Structure no. 36241

Built
2019
6 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
50 ft
1 main span
Daily traffic
5
2024 count
Owner
County
County Highway Agency

About this bridge

Blackstock over Trib of Beaver CR is a steel stringer/multi-beam or girder carrying Blackstock over Trib of Beaver CR in McDonald County, Missouri. It was built in 2019, so it is 6 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 5 vehicles a day, roughly 10% of them trucks, projected to reach 8 by 2044. The structure is 50 ft (15.2 m) long and 20 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesBlackstock
CrossesTrib of Beaver CR
LocationS 19 T 23 N R 32 W
RouteCounty Highway 405
CountyMcDonald County
StateMissouri
Coordinates36.70283, -94.42882
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating74.4 US tons
Inventory rating44.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span47 ft (14.3 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2024)
Projected traffic8 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Blackstock over Trib of Beaver CR built?

It was built in 2019, making it 6 years old in 2025.

What condition is Blackstock over Trib of Beaver 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 February 2024.

How much traffic does Blackstock over Trib of Beaver CR carry?

About 5 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Blackstock over Trib of Beaver CR?

The structure is 50 ft (15.2 m) long with a longest span of 47 ft (14.3 m) and a deck 20 ft wide.

Who owns Blackstock over Trib of Beaver CR?

It is owned by the County Highway Agency.