US Bridges

20th Ave Southeast over S Branch Beaver Creek

FairPosted for load

Emmons County, North Dakota · 9 East 4 North Strasburg · Structure no. 000000015131311

Built
1914
111 years old, rebuilt 2020
Condition
Fair
inspected September 2023
Type
Truss - Thru
Steel
Length
76 ft
1 main span
Daily traffic
24
2019 count
Owner
County
County Highway Agency

About this bridge

20th Ave Southeast over S Branch Beaver Creek is a steel truss - thru carrying 20th Ave Southeast over S Branch Beaver Creek in Emmons County, North Dakota. It was built in 1914 and reconstructed in 2020, so it is 111 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 24 vehicles a day, projected to reach 24 by 2039. The structure is 76 ft (23.3 m) long and 18 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries20th Ave Southeast
CrossesS Branch Beaver Creek
Location9 East 4 North Strasburg
RouteCounty Highway 0
CountyEmmons County
StateNorth Dakota
Coordinates46.1889, -99.96219
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
Deck8 Very GoodNo problems noted.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating12.2 US tons
Inventory rating7.2 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length76 ft (23.3 m)
Longest span73 ft (22.3 m)
Deck width18 ft (5.5 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24 (2019)
Projected traffic24 by 2039
Trucks—
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$270,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 20th Ave Southeast over S Branch Beaver Creek built?

It was built in 1914, making it 111 years old in 2025. It was reconstructed in 2020.

What condition is 20th Ave Southeast over S Branch Beaver 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 September 2023.

How much traffic does 20th Ave Southeast over S Branch Beaver Creek carry?

About 24 vehicles per day (2019 count).

How long is 20th Ave Southeast over S Branch Beaver Creek?

The structure is 76 ft (23.3 m) long with a longest span of 73 ft (22.3 m) and a deck 18 ft wide.

Who owns 20th Ave Southeast over S Branch Beaver Creek?

It is owned by the County Highway Agency.