US Bridges

NE Santa Rosa RD over Br of Grindstone C

Good

DeKalb County, Missouri · S 24 T 59 N R 30 W · Structure no. 29279

Built
2002
23 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
36 ft
1 main span
Daily traffic
25
2024 count
Owner
County
County Highway Agency

About this bridge

NE Santa Rosa RD over Br of Grindstone C is a steel stringer/multi-beam or girder carrying NE Santa Rosa RD over Br of Grindstone C in DeKalb County, Missouri. It was built in 2002, so it is 23 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.

It carries about 25 vehicles a day, roughly 10% of them trucks, projected to reach 29 by 2044. The structure is 36 ft (11 m) long and 18 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesNE Santa Rosa RD
CrossesBr of Grindstone C
LocationS 24 T 59 N R 30 W
RouteCounty Highway 178
CountyDeKalb County
StateMissouri
Coordinates39.91444, -94.20507
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 inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
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 rating95.2 US tons
Inventory rating56.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length36 ft (11 m)
Longest span35 ft (10.7 m)
Deck width18 ft (5.5 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2024)
Projected traffic29 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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was NE Santa Rosa RD over Br of Grindstone C built?

It was built in 2002, making it 23 years old in 2025.

What condition is NE Santa Rosa RD over Br of Grindstone C 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 December 2024.

How much traffic does NE Santa Rosa RD over Br of Grindstone C carry?

About 25 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is NE Santa Rosa RD over Br of Grindstone C?

The structure is 36 ft (11 m) long with a longest span of 35 ft (10.7 m) and a deck 18 ft wide.

Who owns NE Santa Rosa RD over Br of Grindstone C?

It is owned by the County Highway Agency.