US Bridges

464 Ave (fas 6499) over I029

Fair

Hamlin County, South Dakota · 2.8 NW Sd 22 Interch · Structure no. 000000029280020

Built
1973
52 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
426 ft
4 main spans
Daily traffic
66
2023 count
Owner
State
State Highway Agency

About this bridge

464 Ave (fas 6499) over I029 is a steel continuous stringer/multi-beam or girder carrying 464 Ave (fas 6499) over I029 in Hamlin County, South Dakota. It was built in 1973, so it is 52 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 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 66 vehicles a day, roughly 3% of them trucks, projected to reach 66 by 2043. The structure is 426 ft (129.8 m) long and 35 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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Carries464 Ave (fas 6499)
CrossesI029
Location2.8 NW Sd 22 Interch
RouteCounty Highway 0
CountyHamlin County
StateSouth Dakota
Coordinates44.77612, -96.92527
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating64.3 US tons
Inventory rating38.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length426 ft (129.8 m)
Longest span121 ft (37 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic66 (2023)
Projected traffic66 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was 464 Ave (fas 6499) over I029 built?

It was built in 1973, making it 52 years old in 2025.

What condition is 464 Ave (fas 6499) over I029 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 2023.

How much traffic does 464 Ave (fas 6499) over I029 carry?

About 66 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is 464 Ave (fas 6499) over I029?

The structure is 426 ft (129.8 m) long with a longest span of 121 ft (37 m) and a deck 35 ft wide.

Who owns 464 Ave (fas 6499) over I029?

It is owned by the State Highway Agency.