US Bridges

Outer Drive over Floyd River & Cnic RR

Good

Woodbury County, Iowa · 0894714 · Structure no. 000000000504951

Built
2009
16 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
912 ft
9 main spans
Daily traffic
14,264
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Outer Drive over Floyd River & Cnic RR is a prestressed concrete stringer/multi-beam or girder carrying Outer Drive over Floyd River & Cnic RR in Woodbury County, Iowa. It was built in 2009, so it is 16 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 14,264 vehicles a day, roughly 3% of them trucks, projected to reach 14,264 by 2043. The structure is 912 ft (278 m) long and 57 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesOuter Drive
CrossesFloyd River & Cnic RR
Location0894714
RouteCity Street 0
CountyWoodbury County
StateIowa
Coordinates42.53273, -96.36839
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating76.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length912 ft (278 m)
Longest span122 ft (37.2 m)
Deck width57 ft (17.4 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,264 (2021)
Projected traffic14,264 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad and waterway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Outer Drive over Floyd River & Cnic RR built?

It was built in 2009, making it 16 years old in 2025.

What condition is Outer Drive over Floyd River & Cnic RR 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 April 2023.

How much traffic does Outer Drive over Floyd River & Cnic RR carry?

About 14,264 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Outer Drive over Floyd River & Cnic RR?

The structure is 912 ft (278 m) long with a longest span of 122 ft (37.2 m) and a deck 57 ft wide.

Who owns Outer Drive over Floyd River & Cnic RR?

It is owned by the City or Municipal Highway Agency.