US Bridges

355th Avenue over Crow Creek

PoorPosted for load

Buffalo County, South Dakota · 5W & 2.5S of Gann Valley · Structure no. 000000009240135

Built
1975
50 years old, rebuilt 2010
Condition
Poor
inspected June 2023
Type
Tee Beam
Prestressed Concrete
Length
105 ft
3 main spans
Daily traffic
55
2022 count
Owner
County
County Highway Agency

About this bridge

355th Avenue over Crow Creek is a prestressed concrete tee beam carrying 355th Avenue over Crow Creek in Buffalo County, South Dakota. It was built in 1975 and reconstructed in 2010, so it is 50 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 55 vehicles a day, roughly 3% of them trucks, projected to reach 55 by 2032. The structure is 105 ft (32 m) long and 31 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Carries355th Avenue
CrossesCrow Creek
Location5W & 2.5S of Gann Valley
RouteCounty Highway 0
Coordinates44.00007, -99.08664
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.4 US tons
Inventory rating24.3 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length105 ft (32 m)
Longest span45 ft (13.7 m)
Deck width31 ft (9.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic55 (2022)
Projected traffic55 by 2032
Trucks3%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.1 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 355th Avenue over Crow Creek built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 2010.

What condition is 355th Avenue over Crow Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2023.

How much traffic does 355th Avenue over Crow Creek carry?

About 55 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is 355th Avenue over Crow Creek?

The structure is 105 ft (32 m) long with a longest span of 45 ft (13.7 m) and a deck 31 ft wide.

Who owns 355th Avenue over Crow Creek?

It is owned by the County Highway Agency.