US Bridges

I029 over Br Saddle Ck

Fair

Lincoln County, South Dakota · 3.3 S US 18 W Interch · Structure no. 000000042065203

Built
1960
65 years old
Condition
Fair
inspected August 2021
Type
Culvert
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
14,270
2023 count
Owner
State
State Highway Agency

About this bridge

I029 over Br Saddle Ck is a concrete continuous culvert carrying I029 over Br Saddle Ck in Lincoln County, South Dakota. It was built in 1960, so it is 65 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 14,270 vehicles a day, roughly 23% of them trucks, projected to reach 26,256 by 2043. The structure is 29 ft (8.9 m) long. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI029
CrossesBr Saddle Ck
Location3.3 S US 18 W Interch
RouteInterstate 29
Coordinates43.21008, -96.79578
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 protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2021
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 rating80.6 US tons
Inventory rating48.3 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length29 ft (8.9 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,270 (2023)
Projected traffic26,256 by 2043
Trucks23%
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 Br Saddle Ck built?

It was built in 1960, making it 65 years old in 2025.

What condition is I029 over Br Saddle 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 August 2021.

How much traffic does I029 over Br Saddle Ck carry?

About 14,270 vehicles per day (2023 count), of which roughly 23% are trucks.

How long is I029 over Br Saddle Ck?

The structure is 29 ft (8.9 m) long with a longest span of 14 ft (4.3 m).

Who owns I029 over Br Saddle Ck?

It is owned by the State Highway Agency.