US Bridges

S.W.3rd ST over Raccoon River

Good

Polk County, Iowa · 078240900 · Structure no. 000000000504320

Built
1995
30 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
583 ft
6 main spans
Daily traffic
8,948
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

S.W.3rd ST over Raccoon River is a prestressed concrete stringer/multi-beam or girder carrying S.W.3rd ST over Raccoon River in Polk County, Iowa. It was built in 1995, so it is 30 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 8,948 vehicles a day, projected to reach 8,948 by 2043. The structure is 583 ft (177.7 m) long and 74 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesS.W.3rd ST
CrossesRaccoon River
Location078240900
RouteCity Street 0
CountyPolk County
StateIowa
Coordinates41.57726, -93.61741
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating84.5 US tons
Inventory rating50.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length583 ft (177.7 m)
Longest span97 ft (29.6 m)
Deck width74 ft (22.5 m)
Roadway width58 ft (17.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,948 (2022)
Projected traffic8,948 by 2043
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S.W.3rd ST over Raccoon River built?

It was built in 1995, making it 30 years old in 2025.

What condition is S.W.3rd ST over Raccoon River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does S.W.3rd ST over Raccoon River carry?

About 8,948 vehicles per day (2022 count).

How long is S.W.3rd ST over Raccoon River?

The structure is 583 ft (177.7 m) long with a longest span of 97 ft (29.6 m) and a deck 74 ft wide.

Who owns S.W.3rd ST over Raccoon River?

It is owned by the City or Municipal Highway Agency.