US Bridges

120th Ave SW over Cedar Creek

FairPosted for load

Adams County, North Dakota · 12 North of Reeder · Structure no. 000000001104010

Built
1931
94 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
75 ft
1 main span
Daily traffic
35
2019 count
Owner
County
County Highway Agency

About this bridge

120th Ave SW over Cedar Creek is a steel stringer/multi-beam or girder carrying 120th Ave SW over Cedar Creek in Adams County, North Dakota. It was built in 1931, so it is 94 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 35 vehicles a day, projected to reach 35 by 2039. The structure is 75 ft (22.9 m) long and 25 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
Carries120th Ave SW
CrossesCedar Creek
Location12 North of Reeder
RouteCounty Highway 0
CountyAdams County
StateNorth Dakota
Coordinates46.28014, -102.92715
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating28.8 US tons
Inventory rating17.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length75 ft (22.9 m)
Longest span70 ft (21.3 m)
Deck width25 ft (7.6 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2019)
Projected traffic35 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$186,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 120th Ave SW over Cedar Creek built?

It was built in 1931, making it 94 years old in 2025.

What condition is 120th Ave SW over Cedar 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 August 2023.

How much traffic does 120th Ave SW over Cedar Creek carry?

About 35 vehicles per day (2019 count).

How long is 120th Ave SW over Cedar Creek?

The structure is 75 ft (22.9 m) long with a longest span of 70 ft (21.3 m) and a deck 25 ft wide.

Who owns 120th Ave SW over Cedar Creek?

It is owned by the County Highway Agency.