US Bridges

Blackfoot RD over Bear CR

Fair

Boone County, Missouri · S 34 T 49 N R 13 W · Structure no. 15392

Built
1978
47 years old
Condition
Fair
inspected December 2024
Type
Tee Beam
Prestressed Concrete
Length
56 ft
1 main span
Daily traffic
410
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Blackfoot RD over Bear CR is a prestressed concrete tee beam carrying Blackfoot RD over Bear CR in Boone County, Missouri. It was built in 1978, so it is 47 years old, older 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 410 vehicles a day, roughly 5% of them trucks, projected to reach 718 by 2043. The structure is 56 ft (17.1 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesBlackfoot RD
CrossesBear CR
LocationS 34 T 49 N R 13 W
RouteCity Street 0
CountyBoone County
StateMissouri
Coordinates38.98723, -92.36999
Functional classUrban Minor Arterial

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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54.6 US tons
Inventory rating24.8 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length56 ft (17.1 m)
Longest span55 ft (16.8 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic410 (2023)
Projected traffic718 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Blackfoot RD over Bear CR built?

It was built in 1978, making it 47 years old in 2025.

What condition is Blackfoot RD over Bear 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 December 2024.

How much traffic does Blackfoot RD over Bear CR carry?

About 410 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Blackfoot RD over Bear CR?

The structure is 56 ft (17.1 m) long with a longest span of 55 ft (16.8 m) and a deck 30 ft wide.

Who owns Blackfoot RD over Bear CR?

It is owned by the City or Municipal Highway Agency.