US Bridges

407th Ave. over James Rv

Fair

Sanborn County, South Dakota · 1.7E & 3.2S Forestburg · Structure no. 000000056130156

Built
1983
42 years old
Condition
Fair
inspected August 2024
Type
Slab
Concrete Continuous
Length
202 ft
5 main spans
Daily traffic
56
2022 count
Owner
County
County Highway Agency

About this bridge

407th Ave. over James Rv is a concrete continuous slab carrying 407th Ave. over James Rv in Sanborn County, South Dakota. It was built in 1983, so it is 42 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 56 vehicles a day, roughly 2% of them trucks, projected to reach 56 by 2032. The structure is 202 ft (61.6 m) long and 31 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
Carries407th Ave.
CrossesJames Rv
Location1.7E & 3.2S Forestburg
RouteCounty Highway 0
CountySanborn County
StateSouth Dakota
Coordinates43.97455, -98.07121
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length202 ft (61.6 m)
Longest span44 ft (13.4 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic56 (2022)
Projected traffic56 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 407th Ave. over James Rv built?

It was built in 1983, making it 42 years old in 2025.

What condition is 407th Ave. over James Rv in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.

How much traffic does 407th Ave. over James Rv carry?

About 56 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 407th Ave. over James Rv?

The structure is 202 ft (61.6 m) long with a longest span of 44 ft (13.4 m) and a deck 31 ft wide.

Who owns 407th Ave. over James Rv?

It is owned by the County Highway Agency.