US Bridges

6th ST over Perry Creek Conduit

Good

Woodbury County, Iowa · 000000000 · Structure no. 000000000502221

Built
2000
25 years old
Condition
Good
inspected April 2023
Type
Tee Beam
Concrete
Length
50 ft
1 main span
Daily traffic
5,704
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

6th ST over Perry Creek Conduit is a concrete tee beam carrying 6th ST over Perry Creek Conduit in Woodbury County, Iowa. It was built in 2000, so it is 25 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 5,704 vehicles a day, projected to reach 5,704 by 2043. The structure is 50 ft (15.2 m) long and 65 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
Carries6th ST
CrossesPerry Creek Conduit
Location000000000
RouteCity Street 0
CountyWoodbury County
StateIowa
Coordinates42.4963, -96.41021
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
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 evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating45 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span50 ft (15.2 m)
Deck width65 ft (19.8 m)
Roadway width49 ft (14.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,704 (2021)
Projected traffic5,704 by 2043
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 6th ST over Perry Creek Conduit built?

It was built in 2000, making it 25 years old in 2025.

What condition is 6th ST over Perry Creek Conduit 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 6th ST over Perry Creek Conduit carry?

About 5,704 vehicles per day (2021 count).

How long is 6th ST over Perry Creek Conduit?

The structure is 50 ft (15.2 m) long with a longest span of 50 ft (15.2 m) and a deck 65 ft wide.

Who owns 6th ST over Perry Creek Conduit?

It is owned by the City or Municipal Highway Agency.