US Bridges

SD050 over R&w RR

Poor

Brule County, South Dakota · 2.7 N I 90 Interch · Structure no. 000000008074087

Built
1952
73 years old
Condition
Poor
inspected June 2023
Type
Slab
Concrete Continuous
Length
212 ft
5 main spans
Daily traffic
4,431
2024 count
Owner
State
State Highway Agency

About this bridge

SD050 over R&w RR is a concrete continuous slab carrying SD050 over R&w RR in Brule County, South Dakota. It was built in 1952, so it is 73 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 4,431 vehicles a day, roughly 3% of them trucks, projected to reach 5,747 by 2044. The structure is 212 ft (64.7 m) long and 58 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSD050
CrossesR&w RR
Location2.7 N I 90 Interch
RouteState Highway 50
CountyBrule County
StateSouth Dakota
Coordinates43.80662, -99.32333
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment7: Better than present minimum criteria
Operating rating50.4 US tons
Inventory rating30.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadH 20
Structure length212 ft (64.7 m)
Longest span43 ft (13 m)
Deck width58 ft (17.8 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,431 (2024)
Projected traffic5,747 by 2044
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed0.6 mi (1 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.3 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was SD050 over R&w RR built?

It was built in 1952, making it 73 years old in 2025.

What condition is SD050 over R&w 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 June 2023.

How much traffic does SD050 over R&w RR carry?

About 4,431 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is SD050 over R&w RR?

The structure is 212 ft (64.7 m) long with a longest span of 43 ft (13 m) and a deck 58 ft wide.

Who owns SD050 over R&w RR?

It is owned by the State Highway Agency.