US Bridges

Blackmer RD over E Fk of Bear CR

FairPosted for load

Miller County, Missouri · S 3 T 39 N R 15 W · Structure no. 18882

Built
1930
95 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
41 ft
1 main span
Daily traffic
55
2023 count
Owner
County
County Highway Agency

About this bridge

Blackmer RD over E Fk of Bear CR is a steel stringer/multi-beam or girder carrying Blackmer RD over E Fk of Bear CR in Miller County, Missouri. It was built in 1930, so it is 95 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 5 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 55 vehicles a day, roughly 10% of them trucks, projected to reach 94 by 2043. The structure is 41 ft (12.5 m) long and 16 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesBlackmer RD
CrossesE Fk of Bear CR
LocationS 3 T 39 N R 15 W
RouteCounty Highway 203
Coordinates38.16867, -92.55756
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry7: Better than present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating17.9 US tons
Inventory rating6.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length41 ft (12.5 m)
Longest span39 ft (11.9 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic55 (2023)
Projected traffic94 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byOther Local Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$344,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Blackmer RD over E Fk of Bear CR built?

It was built in 1930, making it 95 years old in 2025.

What condition is Blackmer RD over E Fk of 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 January 2025.

How much traffic does Blackmer RD over E Fk of Bear CR carry?

About 55 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Blackmer RD over E Fk of Bear CR?

The structure is 41 ft (12.5 m) long with a longest span of 39 ft (11.9 m) and a deck 16 ft wide.

Who owns Blackmer RD over E Fk of Bear CR?

It is owned by the County Highway Agency and maintained by the Other Local Agency.