US Bridges

I029 over Deer Ck

Fair

Deuel County, South Dakota · 0.8 S Sd 28 Interch · Structure no. 000000020064288

Built
1971
54 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
7,560
2023 count
Owner
State
State Highway Agency

About this bridge

I029 over Deer Ck is a concrete continuous culvert carrying I029 over Deer Ck in Deuel County, South Dakota. It was built in 1971, so it is 54 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 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 7,560 vehicles a day, roughly 20% of them trucks, projected to reach 9,330 by 2043. The structure is 25 ft (7.5 m) long. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI029
CrossesDeer Ck
Location0.8 S Sd 28 Interch
RouteInterstate 29
Coordinates44.56138, -96.75826
Functional classRural 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 protection9 ExcellentNo problems noted.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
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
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating110.1 US tons
Inventory rating109.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length25 ft (7.5 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,560 (2023)
Projected traffic9,330 by 2043
Trucks20%
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 I029 over Deer Ck built?

It was built in 1971, making it 54 years old in 2025.

What condition is I029 over Deer Ck 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 July 2023.

How much traffic does I029 over Deer Ck carry?

About 7,560 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is I029 over Deer Ck?

The structure is 25 ft (7.5 m) long with a longest span of 12 ft (3.7 m).

Who owns I029 over Deer Ck?

It is owned by the State Highway Agency.