US Bridges

387th Avenue over Foot Creek

Good

Brown County, South Dakota · 2.4S of Aberdeen · Structure no. 000000007110356

Built
2009
16 years old
Condition
Good
inspected August 2023
Type
Tee Beam
Prestressed Concrete
Length
85 ft
1 main span
Daily traffic
775
2022 count
Owner
County
County Highway Agency

About this bridge

387th Avenue over Foot Creek is a prestressed concrete tee beam carrying 387th Avenue over Foot Creek in Brown County, South Dakota. It was built in 2009, so it is 16 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 775 vehicles a day, roughly 2% of them trucks, projected to reach 775 by 2032. The structure is 85 ft (25.9 m) long and 36 ft wide. If it were closed, the detour would be 5 mi (8 km).

Carries387th Avenue
CrossesFoot Creek
Location2.4S of Aberdeen
RouteCounty Highway 6599
Coordinates45.42272, -98.49528
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length85 ft (25.9 m)
Longest span83 ft (25.3 m)
Deck width36 ft (11 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic775 (2022)
Projected traffic775 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 387th Avenue over Foot Creek built?

It was built in 2009, making it 16 years old in 2025.

What condition is 387th Avenue over Foot 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 August 2023.

How much traffic does 387th Avenue over Foot Creek carry?

About 775 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 387th Avenue over Foot Creek?

The structure is 85 ft (25.9 m) long with a longest span of 83 ft (25.3 m) and a deck 36 ft wide.

Who owns 387th Avenue over Foot Creek?

It is owned by the County Highway Agency.