US Bridges

US016 over Spring Ck

Good

Pennington County, South Dakota · 0.3E & 0.3N Hill City · Structure no. 000000052244404

Built
1995
30 years old
Condition
Good
inspected December 2023
Type
Frame
Concrete
Length
40 ft
1 main span
Daily traffic
6,868
2024 count
Owner
State
State Highway Agency

About this bridge

US016 over Spring Ck is a concrete frame carrying US016 over Spring Ck in Pennington County, South Dakota. It was built in 1995, so it is 30 years old, younger 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 6,868 vehicles a day, roughly 4% of them trucks, projected to reach 10,831 by 2044. The structure is 40 ft (12.2 m) long and 74 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

CarriesUS016
CrossesSpring Ck
Location0.3E & 0.3N Hill City
RouteU.S. Route 16
Coordinates43.93491, -103.56868
Functional classRural Principal Arterial - Other

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating55.8 US tons
Inventory rating42.8 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length40 ft (12.2 m)
Longest span36 ft (11 m)
Deck width74 ft (22.6 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,868 (2024)
Projected traffic10,831 by 2044
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemYes

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 US016 over Spring Ck built?

It was built in 1995, making it 30 years old in 2025.

What condition is US016 over Spring 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 December 2023.

How much traffic does US016 over Spring Ck carry?

About 6,868 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is US016 over Spring Ck?

The structure is 40 ft (12.2 m) long with a longest span of 36 ft (11 m) and a deck 74 ft wide.

Who owns US016 over Spring Ck?

It is owned by the State Highway Agency.