US Bridges

US 10/MAIN Avenue over US 81/10th Street

Fair

Cass County, North Dakota · Main Ave & 10th St-Fargo · Structure no. 0010939846

Built
1938
87 years old, rebuilt 2020
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
54 ft
1 main span
Daily traffic
24,100
2019 count
Owner
State
State Highway Agency

About this bridge

US 10/MAIN Avenue over US 81/10th Street is a steel stringer/multi-beam or girder carrying US 10/MAIN Avenue over US 81/10th Street in Cass County, North Dakota. It was built in 1938 and reconstructed in 2020, so it is 87 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.

It carries about 24,100 vehicles a day, roughly 4% of them trucks, projected to reach 24,100 by 2039. The structure is 54 ft (16.5 m) long and 85 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesUS 10/MAIN Avenue
CrossesUS 81/10th Street
LocationMain Ave & 10th St-Fargo
RouteU.S. Route 10
CountyCass County
StateNorth Dakota
Coordinates46.87478, -96.79412
Functional classUrban Other Principal Arterial

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.1 US tons
Inventory rating27.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckOther
Main spans1 (+2 approach)
Design loadUnknown
Structure length54 ft (16.5 m)
Longest span36 ft (11 m)
Deck width85 ft (26 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,100 (2019)
Projected traffic24,100 by 2039
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$99,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 10/MAIN Avenue over US 81/10th Street built?

It was built in 1938, making it 87 years old in 2025. It was reconstructed in 2020.

What condition is US 10/MAIN Avenue over US 81/10th Street 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 2024.

How much traffic does US 10/MAIN Avenue over US 81/10th Street carry?

About 24,100 vehicles per day (2019 count), of which roughly 4% are trucks.

How long is US 10/MAIN Avenue over US 81/10th Street?

The structure is 54 ft (16.5 m) long with a longest span of 36 ft (11 m) and a deck 85 ft wide.

Who owns US 10/MAIN Avenue over US 81/10th Street?

It is owned by the State Highway Agency.