US Bridges

SE Irwin RD over Branch of Grindsto

Fair

DeKalb County, Missouri · S 9 T 58 N R 30 W · Structure no. 19249

Built
1991
34 years old
Condition
Fair
inspected February 2023
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
20
2024 count
Owner
County
County Highway Agency

About this bridge

SE Irwin RD over Branch of Grindsto is a concrete culvert carrying SE Irwin RD over Branch of Grindsto in DeKalb County, Missouri. It was built in 1991, so it is 34 years old, younger 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 20 vehicles a day, roughly 10% of them trucks, projected to reach 23 by 2044. The structure is 23 ft (7 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSE Irwin RD
CrossesBranch of Grindsto
LocationS 9 T 58 N R 30 W
RouteCounty Highway 215
CountyDeKalb County
StateMissouri
Coordinates39.85081, -94.26276
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 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
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating64.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length23 ft (7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2024)
Projected traffic23 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 SE Irwin RD over Branch of Grindsto built?

It was built in 1991, making it 34 years old in 2025.

What condition is SE Irwin RD over Branch of Grindsto 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 Irwin RD over Branch of Grindsto carry?

About 20 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is SE Irwin RD over Branch of Grindsto?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m).

Who owns SE Irwin RD over Branch of Grindsto?

It is owned by the County Highway Agency.