US Bridges

SE Gridley RD over Br of Wheeler CR

Poor

DeKalb County, Missouri · S 30 T 58 N R 30 W · Structure no. 23988

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

About this bridge

SE Gridley RD over Br of Wheeler CR is a steel continuous stringer/multi-beam or girder carrying SE Gridley RD over Br of Wheeler 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 35 vehicles a day, roughly 10% of them trucks, projected to reach 40 by 2044. The structure is 26 ft (7.9 m) long and 18 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSE Gridley RD
CrossesBr of Wheeler CR
LocationS 30 T 58 N R 30 W
RouteCounty Highway 449
Coordinates39.80856, -94.31583
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadOther
Structure length26 ft (7.9 m)
Longest span13 ft (4 m)
Deck width18 ft (5.5 m)
Roadway width18 ft (5.4 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$174,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SE Gridley RD over Br of Wheeler 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 Wheeler CR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2023.

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

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

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

The structure is 26 ft (7.9 m) long with a longest span of 13 ft (4 m) and a deck 18 ft wide.

Who owns SE Gridley RD over Br of Wheeler CR?

It is owned by the County Highway Agency.