US Bridges

SE Dallas RD over Grindstone CR

GoodPosted for load

DeKalb County, Missouri · S 26 T 59 N R 30 W · Structure no. 19519

Built
1986
39 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
140 ft
1 main span
Daily traffic
35
2024 count
Owner
County
County Highway Agency

About this bridge

SE Dallas RD over Grindstone CR is a steel stringer/multi-beam or girder carrying SE Dallas RD over Grindstone CR in DeKalb County, Missouri. It was built in 1986, so it is 39 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 35 vehicles a day, roughly 10% of them trucks, projected to reach 40 by 2044. The structure is 140 ft (42.7 m) long and 21 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesSE Dallas RD
CrossesGrindstone CR
LocationS 26 T 59 N R 30 W
RouteCounty Highway 223
CountyDeKalb County
StateMissouri
Coordinates39.89766, -94.23349
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating17.9 US tons
Inventory rating10.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadOther
Structure length140 ft (42.7 m)
Longest span79 ft (24.1 m)
Deck width21 ft (6.5 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2024)
Projected traffic40 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$645,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SE Dallas RD over Grindstone CR built?

It was built in 1986, making it 39 years old in 2025.

What condition is SE Dallas RD over Grindstone CR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2023.

How much traffic does SE Dallas RD over Grindstone CR carry?

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

How long is SE Dallas RD over Grindstone CR?

The structure is 140 ft (42.7 m) long with a longest span of 79 ft (24.1 m) and a deck 21 ft wide.

Who owns SE Dallas RD over Grindstone CR?

It is owned by the County Highway Agency.