US Bridges

Twilight RD over North Fork Sulphur Ck

Good

Butte County, South Dakota · 13 E 15.3 N Newell · Structure no. 000000010440187

Built
1962
63 years old
Condition
Good
inspected August 2024
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
25
2022 count
Owner
County
County Highway Agency

About this bridge

Twilight RD over North Fork Sulphur Ck is a concrete culvert carrying Twilight RD over North Fork Sulphur Ck in Butte County, South Dakota. It was built in 1962, so it is 63 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 25 vehicles a day, roughly 2% of them trucks, projected to reach 40 by 2032. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 8.1 mi (13 km).

CarriesTwilight RD
CrossesNorth Fork Sulphur Ck
Location13 E 15.3 N Newell
RouteCounty Highway 0
Coordinates44.94401, -103.15857
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 inspectionAugust 2024
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 alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length22 ft (6.7 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 traffic25 (2022)
Projected traffic40 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Twilight RD over North Fork Sulphur Ck built?

It was built in 1962, making it 63 years old in 2025.

What condition is Twilight RD over North Fork Sulphur 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 August 2024.

How much traffic does Twilight RD over North Fork Sulphur Ck carry?

About 25 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Twilight RD over North Fork Sulphur Ck?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).

Who owns Twilight RD over North Fork Sulphur Ck?

It is owned by the County Highway Agency.