US Bridges

109th Ave SW over Antelope Creek

Fair

Stark County, North Dakota · 7 South 2 East Dickinson · Structure no. 000000045123160

Built
1971
54 years old
Condition
Fair
inspected June 2023
Type
Channel Beam
Concrete
Length
36 ft
1 main span
Daily traffic
20
2018 count
Owner
County
County Highway Agency

About this bridge

109th Ave SW over Antelope Creek is a concrete channel beam carrying 109th Ave SW over Antelope Creek in Stark County, North Dakota. It was built in 1971, so it is 54 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 20 vehicles a day, projected to reach 20 by 2038. The structure is 36 ft (11 m) long and 26 ft wide.

Location

Open in Google Maps
Carries109th Ave SW
CrossesAntelope Creek
Location7 South 2 East Dickinson
RouteCounty Highway 0
CountyStark County
StateNorth Dakota
Coordinates46.77876, -102.74774
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating36 US tons
Inventory rating21.1 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckOther
Main spans1
Design loadUnknown
Structure length36 ft (11 m)
Longest span34 ft (10.4 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2018)
Projected traffic20 by 2038
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 109th Ave SW over Antelope Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is 109th Ave SW over Antelope 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 June 2023.

How much traffic does 109th Ave SW over Antelope Creek carry?

About 20 vehicles per day (2018 count).

How long is 109th Ave SW over Antelope Creek?

The structure is 36 ft (11 m) long with a longest span of 34 ft (10.4 m) and a deck 26 ft wide.

Who owns 109th Ave SW over Antelope Creek?

It is owned by the County Highway Agency.