US Bridges

IRR SD127 over Little Minnesota Rv

Poor

Roberts County, South Dakota · 2.7 N JCT Sd 10 · Structure no. 000000055100164

Built
1953
72 years old
Condition
Poor
inspected July 2024
Type
Slab
Concrete Continuous
Length
209 ft
5 main spans
Daily traffic
872
2024 count
Owner
State
State Highway Agency

About this bridge

IRR SD127 over Little Minnesota Rv is a concrete continuous slab carrying IRR SD127 over Little Minnesota Rv in Roberts County, South Dakota. It was built in 1953, so it is 72 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 872 vehicles a day, roughly 14% of them trucks, projected to reach 1,702 by 2044. The structure is 209 ft (63.7 m) long and 34 ft wide. If it were closed, the detour would be 34.2 mi (55 km).

CarriesIRR SD127
CrossesLittle Minnesota Rv
Location2.7 N JCT Sd 10
RouteState Highway 127
Coordinates45.69948, -97.02009
Functional classRural Minor Arterial

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.
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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.5 US tons
Inventory rating40.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadH 20
Structure length209 ft (63.7 m)
Longest span43 ft (13 m)
Deck width34 ft (10.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic872 (2024)
Projected traffic1,702 by 2044
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.2 mi (55 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR SD127 over Little Minnesota Rv built?

It was built in 1953, making it 72 years old in 2025.

What condition is IRR SD127 over Little Minnesota Rv 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 July 2024.

How much traffic does IRR SD127 over Little Minnesota Rv carry?

About 872 vehicles per day (2024 count), of which roughly 14% are trucks.

How long is IRR SD127 over Little Minnesota Rv?

The structure is 209 ft (63.7 m) long with a longest span of 43 ft (13 m) and a deck 34 ft wide.

Who owns IRR SD127 over Little Minnesota Rv?

It is owned by the State Highway Agency.