US Bridges

Griffin Road over Tributary Grand River

Good

Bowman County, North Dakota · 17 South of Griffen · Structure no. 000000006126220

Built
2013
12 years old
Condition
Good
inspected November 2021
Type
Culvert
Concrete
Length
29 ft
2 main spans
Daily traffic
70
2017 count
Owner
County
County Highway Agency

About this bridge

Griffin Road over Tributary Grand River is a concrete culvert carrying Griffin Road over Tributary Grand River in Bowman County, North Dakota. It was built in 2013, so it is 12 years old, younger than the North Dakota average of 48.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 70 vehicles a day, projected to reach 50 by 2037. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesGriffin Road
CrossesTributary Grand River
Location17 South of Griffen
RouteCounty Highway 623
CountyBowman County
StateNorth Dakota
Coordinates45.97407, -103.53501
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionNovember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53.2 US tons
Inventory rating41.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 25 or greater
Structure length29 ft (8.8 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70 (2017)
Projected traffic50 by 2037
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Griffin Road over Tributary Grand River built?

It was built in 2013, making it 12 years old in 2025.

What condition is Griffin Road over Tributary Grand River 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 November 2021.

How much traffic does Griffin Road over Tributary Grand River carry?

About 70 vehicles per day (2017 count).

How long is Griffin Road over Tributary Grand River?

The structure is 29 ft (8.8 m) long with a longest span of 14 ft (4.3 m).

Who owns Griffin Road over Tributary Grand River?

It is owned by the County Highway Agency.