US Bridges

487th Ave HWY 103 over Beaver Creek

Poor

Minnehaha County, South Dakota · NW Corner Valley Springs · Structure no. 000000050330183

Built
1967
58 years old
Condition
Poor
inspected June 2024
Type
Slab
Concrete Continuous
Length
119 ft
3 main spans
Daily traffic
1,006
2023 count
Owner
County
County Highway Agency

About this bridge

487th Ave HWY 103 over Beaver Creek is a concrete continuous slab carrying 487th Ave HWY 103 over Beaver Creek in Minnehaha County, South Dakota. It was built in 1967, so it is 58 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.

It carries about 1,006 vehicles a day, roughly 3% of them trucks, projected to reach 1,167 by 2038. The structure is 119 ft (36.3 m) long and 34 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Carries487th Ave HWY 103
CrossesBeaver Creek
LocationNW Corner Valley Springs
RouteCounty Highway 0
Coordinates43.58615, -96.47248
Functional classRural Minor 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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length119 ft (36.3 m)
Longest span45 ft (13.7 m)
Deck width34 ft (10.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,006 (2023)
Projected traffic1,167 by 2038
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$1.1 million (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 487th Ave HWY 103 over Beaver Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is 487th Ave HWY 103 over Beaver 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 2024.

How much traffic does 487th Ave HWY 103 over Beaver Creek carry?

About 1,006 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is 487th Ave HWY 103 over Beaver Creek?

The structure is 119 ft (36.3 m) long with a longest span of 45 ft (13.7 m) and a deck 34 ft wide.

Who owns 487th Ave HWY 103 over Beaver Creek?

It is owned by the County Highway Agency.