US Bridges

I090 over Higgins Gulch

Fair

Lawrence County, South Dakota · 1 W US 85 Interch · Structure no. 000000041084057

Built
1974
51 years old
Condition
Fair
inspected December 2024
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
7,640
2023 count
Owner
State
State Highway Agency

About this bridge

I090 over Higgins Gulch is a concrete continuous culvert carrying I090 over Higgins Gulch in Lawrence County, South Dakota. It was built in 1974, so it is 51 years old, older than the South Dakota average of 48.9 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 7,640 vehicles a day, roughly 16% of them trucks, projected to reach 10,070 by 2043. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI090
CrossesHiggins Gulch
Location1 W US 85 Interch
RouteInterstate 90
Coordinates44.52176, -103.88236
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99.8 US tons
Inventory rating59.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length21 ft (6.4 m)
Longest span10 ft (3.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,640 (2023)
Projected traffic10,070 by 2043
Trucks16%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I090 over Higgins Gulch built?

It was built in 1974, making it 51 years old in 2025.

What condition is I090 over Higgins Gulch 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 December 2024.

How much traffic does I090 over Higgins Gulch carry?

About 7,640 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is I090 over Higgins Gulch?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3.1 m).

Who owns I090 over Higgins Gulch?

It is owned by the State Highway Agency.