US Bridges

Town Street (US16) over Abandon Line RR

PoorPosted for load

Pennington County, South Dakota · Old HWY16-N Edge Town- Hc · Structure no. 000000052242403

Built
1930
95 years old
Condition
Poor
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
101 ft
3 main spans
Daily traffic
1,000
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Town Street (US16) over Abandon Line RR is a steel continuous stringer/multi-beam or girder carrying Town Street (US16) over Abandon Line RR in Pennington County, South Dakota. It was built in 1930, so it is 95 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 1,000 vehicles a day, roughly 9% of them trucks, projected to reach 1,368 by 2032. The structure is 101 ft (30.8 m) long and 23 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesTown Street (US16)
CrossesAbandon Line RR
LocationOld HWY16-N Edge Town- Hc
RouteCity Street 0
CountyPennington County
StateSouth Dakota
Coordinates43.93605, -103.57175
Functional classRural Local

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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating18 US tons
Inventory rating13.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length101 ft (30.8 m)
Longest span33 ft (10.1 m)
Deck width23 ft (6.9 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2022)
Projected traffic1,368 by 2032
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$476,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Town Street (US16) over Abandon Line RR built?

It was built in 1930, making it 95 years old in 2025.

What condition is Town Street (US16) over Abandon Line RR 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 May 2024.

How much traffic does Town Street (US16) over Abandon Line RR carry?

About 1,000 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is Town Street (US16) over Abandon Line RR?

The structure is 101 ft (30.8 m) long with a longest span of 33 ft (10.1 m) and a deck 23 ft wide.

Who owns Town Street (US16) over Abandon Line RR?

It is owned by the Town or Township Highway Agency.