US Bridges

Nd Highway 28 over Lake Darling

Fair

Renville County, North Dakota · 7 South of N.D. HWY 5 · Structure no. 0028070479

Built
1988
37 years old
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
260 ft
3 main spans
Daily traffic
150
2019 count
Owner
State
State Highway Agency

About this bridge

Nd Highway 28 over Lake Darling is a prestressed concrete continuous box beam or girders - single or spread carrying Nd Highway 28 over Lake Darling in Renville County, North Dakota. It was built in 1988, so it is 37 years old, younger 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 150 vehicles a day, roughly 20% of them trucks, projected to reach 150 by 2039. The structure is 260 ft (79.2 m) long and 45 ft wide. If it were closed, the detour would be 64 mi (103 km).

CarriesNd Highway 28
CrossesLake Darling
Location7 South of N.D. HWY 5
RouteState Highway 28
Coordinates48.66226, -101.69675
Functional classRural Major Collector

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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating52.1 US tons
Inventory rating30 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length260 ft (79.2 m)
Longest span96 ft (29.3 m)
Deck width45 ft (13.7 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2019)
Projected traffic150 by 2039
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed64 mi (103 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 28 over Lake Darling built?

It was built in 1988, making it 37 years old in 2025.

What condition is Nd Highway 28 over Lake Darling 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 2024.

How much traffic does Nd Highway 28 over Lake Darling carry?

About 150 vehicles per day (2019 count), of which roughly 20% are trucks.

How long is Nd Highway 28 over Lake Darling?

The structure is 260 ft (79.2 m) long with a longest span of 96 ft (29.3 m) and a deck 45 ft wide.

Who owns Nd Highway 28 over Lake Darling?

It is owned by the State Highway Agency.