US Bridges

I029 S over 197 ST

Fair

Brookings County, South Dakota · 1 S Deuel CO Line · Structure no. 000000006184010

Built
1970
55 years old
Condition
Fair
inspected July 2023
Type
Slab
Concrete Continuous
Length
119 ft
3 main spans
Daily traffic
5,135
2024 count
Owner
State
State Highway Agency

About this bridge

I029 S over 197 ST is a concrete continuous slab carrying I029 S over 197 ST in Brookings County, South Dakota. It was built in 1970, so it is 55 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 5,135 vehicles a day, roughly 29% of them trucks, projected to reach 8,185 by 2044. The structure is 119 ft (36.3 m) long and 41 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI029 S
Crosses197 ST
Location1 S Deuel CO Line
RouteInterstate 29
CountyBrookings County
StateSouth Dakota
Coordinates44.52869, -96.75724
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.2 US tons
Inventory rating27.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length119 ft (36.3 m)
Longest span43 ft (13.1 m)
Deck width41 ft (12.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,135 (2024)
Projected traffic8,185 by 2044
Trucks29%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I029 S over 197 ST built?

It was built in 1970, making it 55 years old in 2025.

What condition is I029 S over 197 ST 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 S over 197 ST carry?

About 5,135 vehicles per day (2024 count), of which roughly 29% are trucks.

How long is I029 S over 197 ST?

The structure is 119 ft (36.3 m) long with a longest span of 43 ft (13.1 m) and a deck 41 ft wide.

Who owns I029 S over 197 ST?

It is owned by the State Highway Agency.