US Bridges

River Boulevard over Big Sioux River

Poor

Minnehaha County, South Dakota · W of Southeastern Avenue · Structure no. 000000050214215

Built
1975
50 years old, rebuilt 1989
Condition
Poor
inspected October 2023
Type
Girder and Floorbeam System
Prestressed Concrete Continuous
Length
407 ft
5 main spans
Daily traffic
5,300
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

River Boulevard over Big Sioux River is a prestressed concrete continuous girder and floorbeam system carrying River Boulevard over Big Sioux River in Minnehaha County, South Dakota. It was built in 1975 and reconstructed in 1989, so it is 50 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 5,300 vehicles a day, roughly 1% of them trucks, projected to reach 7,500 by 2032. The structure is 407 ft (124.1 m) long and 68 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesRiver Boulevard
CrossesBig Sioux River
LocationW of Southeastern Avenue
RouteCity Street 0
Coordinates43.53661, -96.70162
Functional classUrban 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.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.2 US tons
Inventory rating30.3 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans5
Design loadHS 20
Structure length407 ft (124.1 m)
Longest span82 ft (24.9 m)
Deck width68 ft (20.6 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,300 (2022)
Projected traffic7,500 by 2032
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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$12.5 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was River Boulevard over Big Sioux River built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 1989.

What condition is River Boulevard over Big Sioux River 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 October 2023.

How much traffic does River Boulevard over Big Sioux River carry?

About 5,300 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is River Boulevard over Big Sioux River?

The structure is 407 ft (124.1 m) long with a longest span of 82 ft (24.9 m) and a deck 68 ft wide.

Who owns River Boulevard over Big Sioux River?

It is owned by the City or Municipal Highway Agency.