US Bridges

SE Whitaker RD over Br of Grindstone C

FairClosed to traffic

DeKalb County, Missouri · S 32 T 58 N R 30 W · Structure no. 24130

Built
1930
95 years old, rebuilt 1995
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
24 ft
2 main spans
Daily traffic
35
2024 count
Owner
County
County Highway Agency

About this bridge

SE Whitaker RD over Br of Grindstone C is a steel stringer/multi-beam or girder carrying SE Whitaker RD over Br of Grindstone C in DeKalb County, Missouri. It was built in 1930 and reconstructed in 1995, 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: closed to all traffic.

It carries about 35 vehicles a day, roughly 10% of them trucks, projected to reach 40 by 2044. The structure is 24 ft (7.3 m) long and 18 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSE Whitaker RD
CrossesBr of Grindstone C
LocationS 32 T 58 N R 30 W
RouteCounty Highway 460
Coordinates39.8037, -94.28074
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.
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating0 US tons
Inventory rating0 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadOther
Structure length24 ft (7.3 m)
Longest span12 ft (3.7 m)
Deck width18 ft (5.5 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2024)
Projected traffic40 by 2044
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$255,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SE Whitaker RD over Br of Grindstone C built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1995.

What condition is SE Whitaker RD over Br of Grindstone C 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 February 2023.

How much traffic does SE Whitaker RD over Br of Grindstone C carry?

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

How long is SE Whitaker RD over Br of Grindstone C?

The structure is 24 ft (7.3 m) long with a longest span of 12 ft (3.7 m) and a deck 18 ft wide.

Who owns SE Whitaker RD over Br of Grindstone C?

It is owned by the County Highway Agency.