US Bridges

139th Ave. SW over Cedar Creek

Good

Bowman County, North Dakota · 6 North 6 East Bowman · Structure no. 000000006138010

Built
1989
36 years old
Condition
Good
inspected October 2023
Type
Tee Beam
Prestressed Concrete
Length
45 ft
1 main span
Daily traffic
65
2019 count
Owner
County
County Highway Agency

About this bridge

139th Ave. SW over Cedar Creek is a prestressed concrete tee beam carrying 139th Ave. SW over Cedar Creek in Bowman County, North Dakota. It was built in 1989, so it is 36 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 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 65 vehicles a day, projected to reach 65 by 2039. The structure is 45 ft (13.7 m) long and 31 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
Carries139th Ave. SW
CrossesCedar Creek
Location6 North 6 East Bowman
RouteCounty Highway 0
CountyBowman County
StateNorth Dakota
Coordinates46.27948, -103.26565
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating60.4 US tons
Inventory rating36.3 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length45 ft (13.7 m)
Longest span43 ft (13.1 m)
Deck width31 ft (9.4 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic65 (2019)
Projected traffic65 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 139th Ave. SW over Cedar Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is 139th Ave. SW over Cedar Creek 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 October 2023.

How much traffic does 139th Ave. SW over Cedar Creek carry?

About 65 vehicles per day (2019 count).

How long is 139th Ave. SW over Cedar Creek?

The structure is 45 ft (13.7 m) long with a longest span of 43 ft (13.1 m) and a deck 31 ft wide.

Who owns 139th Ave. SW over Cedar Creek?

It is owned by the County Highway Agency.