US Bridges

SE Gridley RD over Br of Wamsley CR

Fair

DeKalb County, Missouri · S 35 T 58 N R 30 W · Structure no. 24116

Built
1930
95 years old, rebuilt 1995
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
25 ft
1 main span
Daily traffic
50
2024 count
Owner
County
County Highway Agency

About this bridge

SE Gridley RD over Br of Wamsley CR is a steel stringer/multi-beam or girder carrying SE Gridley RD over Br of Wamsley CR 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 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 50 vehicles a day, roughly 10% of them trucks, projected to reach 58 by 2044. The structure is 25 ft (7.6 m) long and 18 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesSE Gridley RD
CrossesBr of Wamsley CR
LocationS 35 T 58 N R 30 W
RouteCounty Highway 458
CountyDeKalb County
StateMissouri
Coordinates39.8003, -94.23587
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.4 US tons
Inventory rating48.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length25 ft (7.6 m)
Longest span24 ft (7.3 m)
Deck width18 ft (5.4 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2024)
Projected traffic58 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SE Gridley RD over Br of Wamsley CR built?

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

What condition is SE Gridley RD over Br of Wamsley 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 February 2023.

How much traffic does SE Gridley RD over Br of Wamsley CR carry?

About 50 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is SE Gridley RD over Br of Wamsley CR?

The structure is 25 ft (7.6 m) long with a longest span of 24 ft (7.3 m) and a deck 18 ft wide.

Who owns SE Gridley RD over Br of Wamsley CR?

It is owned by the County Highway Agency.