US Bridges

3rd Ave over Floyd River

Fair

Sioux County, Iowa · 000000000 · Structure no. 000000000048600

Built
1933
92 years old, rebuilt 1966
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
213 ft
3 main spans
Daily traffic
1,807
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

3rd Ave over Floyd River is a steel continuous stringer/multi-beam or girder carrying 3rd Ave over Floyd River in Sioux County, Iowa. It was built in 1933 and reconstructed in 1966, so it is 92 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,807 vehicles a day, roughly 5% of them trucks, projected to reach 1,807 by 2043. The structure is 213 ft (64.9 m) long and 36 ft wide.

Location

Open in Google Maps
Carries3rd Ave
CrossesFloyd River
Location000000000
RouteCity Street 0
CountySioux County
StateIowa
Coordinates42.9921, -96.00752
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.4 US tons
Inventory rating21.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length213 ft (64.9 m)
Longest span82 ft (25 m)
Deck width36 ft (11.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,807 (2022)
Projected traffic1,807 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 3rd Ave over Floyd River built?

It was built in 1933, making it 92 years old in 2025. It was reconstructed in 1966.

What condition is 3rd Ave over Floyd River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2023.

How much traffic does 3rd Ave over Floyd River carry?

About 1,807 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is 3rd Ave over Floyd River?

The structure is 213 ft (64.9 m) long with a longest span of 82 ft (25 m) and a deck 36 ft wide.

Who owns 3rd Ave over Floyd River?

It is owned by the City or Municipal Highway Agency.