US Bridges

Rt W E over N Blackbird CR

FairPosted for load

Putnam County, Missouri · S 27 T 65 N R 17 W · Structure no. 8449

Built
1965
60 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
253 ft
3 main spans
Daily traffic
79
2024 count
Owner
State
State Highway Agency

About this bridge

Rt W E over N Blackbird CR is a steel continuous stringer/multi-beam or girder carrying Rt W E over N Blackbird CR in Putnam County, Missouri. It was built in 1965, so it is 60 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. Its operating status is: posted for load restriction.

It carries about 79 vehicles a day, roughly 8% of them trucks, projected to reach 99 by 2044. The structure is 253 ft (77.1 m) long and 29 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

Location

Open in Google Maps
CarriesRt W E
CrossesN Blackbird CR
LocationS 27 T 65 N R 17 W
RouteState Highway 0W
CountyPutnam County
StateMissouri
Coordinates40.40686, -92.78662
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating23.8 US tons
Inventory rating12.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length253 ft (77.1 m)
Longest span98 ft (29.9 m)
Deck width29 ft (8.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic79 (2024)
Projected traffic99 by 2044
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Rt W E over N Blackbird CR built?

It was built in 1965, making it 60 years old in 2025.

What condition is Rt W E over N 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 December 2023.

How much traffic does Rt W E over N Blackbird CR carry?

About 79 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Rt W E over N Blackbird CR?

The structure is 253 ft (77.1 m) long with a longest span of 98 ft (29.9 m) and a deck 29 ft wide.

Who owns Rt W E over N Blackbird CR?

It is owned by the State Highway Agency.