US Bridges

Fdr 140 over Boxelder Creek

Good

Lawrence County, South Dakota · T 3 N R 5 E Sec 28 · Structure no. 020308000010094

Built
1948
77 years old
Condition
Good
inspected March 2024
Type
Tee Beam
Concrete
Length
35 ft
1 main span
Daily traffic
50
1991 count
Owner
Federal
U.S. Forest Service

About this bridge

Fdr 140 over Boxelder Creek is a concrete tee beam carrying Fdr 140 over Boxelder Creek in Lawrence County, South Dakota. It was built in 1948, so it is 77 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, projected to reach 75 by 2045. The structure is 35 ft (10.7 m) long and 20 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

CarriesFdr 140
CrossesBoxelder Creek
LocationT 3 N R 5 E Sec 28
RouteFederal Lands Road 140
Coordinates44.19703, -103.53371
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating45.3 US tons
Inventory rating35.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length35 ft (10.7 m)
Longest span32 ft (9.7 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (1991)
Projected traffic75 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed620.7 mi (999 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Fdr 140 over Boxelder Creek built?

It was built in 1948, making it 77 years old in 2025.

What condition is Fdr 140 over Boxelder Creek 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 March 2024.

How much traffic does Fdr 140 over Boxelder Creek carry?

About 50 vehicles per day (1991 count).

How long is Fdr 140 over Boxelder Creek?

The structure is 35 ft (10.7 m) long with a longest span of 32 ft (9.7 m) and a deck 20 ft wide.

Who owns Fdr 140 over Boxelder Creek?

It is owned by the U.S. Forest Service.