US Bridges

HWY 1416 over Ck

Good

Pennington County, South Dakota · 1N New Underwood · Structure no. 000000052609290

Built
1926
99 years old, rebuilt 1935
Condition
Good
inspected June 2021
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
1,089
2022 count
Owner
County
County Highway Agency

About this bridge

HWY 1416 over Ck is a concrete culvert carrying HWY 1416 over Ck in Pennington County, South Dakota. It was built in 1926 and reconstructed in 1935, so it is 99 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,089 vehicles a day, roughly 3% of them trucks, projected to reach 1,089 by 2032. The structure is 21 ft (6.3 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesHWY 1416
CrossesCk
Location1N New Underwood
RouteCounty Highway 0
Coordinates44.09626, -102.83353
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJune 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 rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,089 (2022)
Projected traffic1,089 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 HWY 1416 over Ck built?

It was built in 1926, making it 99 years old in 2025. It was reconstructed in 1935.

What condition is HWY 1416 over Ck in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2021.

How much traffic does HWY 1416 over Ck carry?

About 1,089 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is HWY 1416 over Ck?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m).

Who owns HWY 1416 over Ck?

It is owned by the County Highway Agency.