US Bridges

Sand Crk Bottom RD over Blackbird CR

Fair

Adair County, Missouri · S 27 T 64 N R 16 W · Structure no. 12764

Built
1994
31 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
127 ft
3 main spans
Daily traffic
35
2024 count
Owner
County
County Highway Agency

About this bridge

Sand Crk Bottom RD over Blackbird CR is a steel stringer/multi-beam or girder carrying Sand Crk Bottom RD over Blackbird CR in Adair County, Missouri. It was built in 1994, so it is 31 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 35 vehicles a day, roughly 10% of them trucks, projected to reach 39 by 2044. The structure is 127 ft (38.7 m) long and 17 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesSand Crk Bottom RD
CrossesBlackbird CR
LocationS 27 T 64 N R 16 W
RouteCounty Highway 19
CountyAdair County
StateMissouri
Coordinates40.31417, -92.69567
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating110.1 US tons
Inventory rating98.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length127 ft (38.7 m)
Longest span63 ft (19.2 m)
Deck width17 ft (5.1 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2024)
Projected traffic39 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 Sand Crk Bottom RD over Blackbird CR built?

It was built in 1994, making it 31 years old in 2025.

What condition is Sand Crk Bottom RD over Blackbird 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 January 2024.

How much traffic does Sand Crk Bottom RD over Blackbird CR carry?

About 35 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Sand Crk Bottom RD over Blackbird CR?

The structure is 127 ft (38.7 m) long with a longest span of 63 ft (19.2 m) and a deck 17 ft wide.

Who owns Sand Crk Bottom RD over Blackbird CR?

It is owned by the County Highway Agency.