US Bridges

169th Av SW over Fivemile Creek

Fair

Bowman County, North Dakota · 20 South 3 East Marmarth · Structure no. 000000006108190

Built
1970
55 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
25
2019 count
Owner
County
County Highway Agency

About this bridge

169th Av SW over Fivemile Creek is a steel stringer/multi-beam or girder carrying 169th Av SW over Fivemile Creek in Bowman County, North Dakota. It was built in 1970, so it is 55 years old, older than the North Dakota average of 48.2 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 25 vehicles a day, projected to reach 30 by 2039. The structure is 30 ft (9.1 m) long and 24 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
Carries169th Av SW
CrossesFivemile Creek
Location20 South 3 East Marmarth
RouteCounty Highway 0
CountyBowman County
StateNorth Dakota
Coordinates46.01418, -103.8911
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61.9 US tons
Inventory rating35.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadH 20
Structure length30 ft (9.1 m)
Longest span29 ft (8.8 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deck0 ft (0 m)

Traffic and service

Average daily traffic25 (2019)
Projected traffic30 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 169th Av SW over Fivemile Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is 169th Av SW over Fivemile Creek 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 October 2023.

How much traffic does 169th Av SW over Fivemile Creek carry?

About 25 vehicles per day (2019 count).

How long is 169th Av SW over Fivemile Creek?

The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.8 m) and a deck 24 ft wide.

Who owns 169th Av SW over Fivemile Creek?

It is owned by the County Highway Agency.