US Bridges

Nemo Road over Boxelder Ck

Good

Lawrence County, South Dakota · 2.3 N 3.5 W of Nemo · Structure no. 000000041238262

Built
1974
51 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
67 ft
1 main span
Daily traffic
282
2022 count
Owner
County
County Highway Agency

About this bridge

Nemo Road over Boxelder Ck is a prestressed concrete continuous stringer/multi-beam or girder carrying Nemo Road over Boxelder Ck in Lawrence County, South Dakota. It was built in 1974, so it is 51 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 282 vehicles a day, roughly 3% of them trucks, projected to reach 282 by 2032. The structure is 67 ft (20.4 m) long and 32 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

CarriesNemo Road
CrossesBoxelder Ck
Location2.3 N 3.5 W of Nemo
RouteCounty Highway 0
Coordinates44.2248, -103.57721
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating21.1 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length67 ft (20.4 m)
Longest span65 ft (19.8 m)
Deck width32 ft (9.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic282 (2022)
Projected traffic282 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 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 Nemo Road over Boxelder Ck built?

It was built in 1974, making it 51 years old in 2025.

What condition is Nemo Road over Boxelder 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 July 2024.

How much traffic does Nemo Road over Boxelder Ck carry?

About 282 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Nemo Road over Boxelder Ck?

The structure is 67 ft (20.4 m) long with a longest span of 65 ft (19.8 m) and a deck 32 ft wide.

Who owns Nemo Road over Boxelder Ck?

It is owned by the County Highway Agency.