US Bridges

County RD 975 over Osborne Br

FairPosted for load

Cedar County, Missouri · S 9 T 33 N R 27 W · Structure no. 24373

Built
1930
95 years old, rebuilt 1984
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
70 ft
4 main spans
Daily traffic
30
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 975 over Osborne Br is a steel continuous stringer/multi-beam or girder carrying County RD 975 over Osborne Br in Cedar County, Missouri. It was built in 1930 and reconstructed in 1984, 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 30 vehicles a day, roughly 10% of them trucks, projected to reach 38 by 2043. The structure is 70 ft (21.3 m) long and 16 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCounty RD 975
CrossesOsborne Br
LocationS 9 T 33 N R 27 W
RouteCounty Highway 484
CountyCedar County
StateMissouri
Coordinates37.61158, -93.90106
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionDecember 2024
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating11.9 US tons
Inventory rating6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadOther
Structure length70 ft (21.3 m)
Longest span18 ft (5.5 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2023)
Projected traffic38 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$527,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 975 over Osborne Br built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1984.

What condition is County RD 975 over Osborne Br 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 County RD 975 over Osborne Br carry?

About 30 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 975 over Osborne Br?

The structure is 70 ft (21.3 m) long with a longest span of 18 ft (5.5 m) and a deck 16 ft wide.

Who owns County RD 975 over Osborne Br?

It is owned by the County Highway Agency.