US Bridges

Nd Highway 20 over Sweetwater Lake Overflow

Fair

Ramsey County, North Dakota · 2 South Webster · Structure no. 0020113539

Built
1967
58 years old
Condition
Fair
inspected October 2023
Type
Tee Beam
Concrete
Length
40 ft
1 main span
Daily traffic
1,400
2019 count
Owner
State
State Highway Agency

About this bridge

Nd Highway 20 over Sweetwater Lake Overflow is a concrete tee beam carrying Nd Highway 20 over Sweetwater Lake Overflow in Ramsey County, North Dakota. It was built in 1967, so it is 58 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 1,400 vehicles a day, roughly 9% of them trucks, projected to reach 1,400 by 2039. The structure is 40 ft (12.2 m) long and 45 ft wide. If it were closed, the detour would be 32.9 mi (53 km).

Location

Open in Google Maps
CarriesNd Highway 20
CrossesSweetwater Lake Overflow
Location2 South Webster
RouteState Highway 20
CountyRamsey County
StateNorth Dakota
Coordinates48.2569, -98.87629
Functional classRural Minor 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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating90.2 US tons
Inventory rating54 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span38 ft (11.6 m)
Deck width45 ft (13.7 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,400 (2019)
Projected traffic1,400 by 2039
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed32.9 mi (53 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Nd Highway 20 over Sweetwater Lake Overflow built?

It was built in 1967, making it 58 years old in 2025.

What condition is Nd Highway 20 over Sweetwater Lake Overflow 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 October 2023.

How much traffic does Nd Highway 20 over Sweetwater Lake Overflow carry?

About 1,400 vehicles per day (2019 count), of which roughly 9% are trucks.

How long is Nd Highway 20 over Sweetwater Lake Overflow?

The structure is 40 ft (12.2 m) long with a longest span of 38 ft (11.6 m) and a deck 45 ft wide.

Who owns Nd Highway 20 over Sweetwater Lake Overflow?

It is owned by the State Highway Agency.