US Bridges

388th Avenue over Moccasin Creek

Fair

Brown County, South Dakota · 1E & 1.5S of Warner · Structure no. 000000007120435

Built
2007
18 years old
Condition
Fair
inspected July 2024
Type
Tee Beam
Prestressed Concrete
Length
49 ft
1 main span
Daily traffic
98
2022 count
Owner
County
County Highway Agency

About this bridge

388th Avenue over Moccasin Creek is a prestressed concrete tee beam carrying 388th Avenue over Moccasin Creek in Brown County, South Dakota. It was built in 2007, so it is 18 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 5 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 98 vehicles a day, roughly 2% of them trucks, projected to reach 98 by 2032. The structure is 49 ft (14.9 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries388th Avenue
CrossesMoccasin Creek
Location1E & 1.5S of Warner
Coordinates45.3073, -98.47471
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length49 ft (14.9 m)
Longest span48 ft (14.6 m)
Deck width31 ft (9.3 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic98 (2022)
Projected traffic98 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 388th Avenue over Moccasin Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is 388th Avenue over Moccasin Creek 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 July 2024.

How much traffic does 388th Avenue over Moccasin Creek carry?

About 98 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 388th Avenue over Moccasin Creek?

The structure is 49 ft (14.9 m) long with a longest span of 48 ft (14.6 m) and a deck 31 ft wide.

Who owns 388th Avenue over Moccasin Creek?

It is owned by the County Highway Agency.