US Bridges

W 7th over Perry Creek

Good

Woodbury County, Iowa · 000000000 · Structure no. 000000000504685

Built
1900
125 years old
Condition
Good
inspected April 2024
Type
Slab
Concrete Continuous
Length
157 ft
5 main spans
Daily traffic
5,086
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

W 7th over Perry Creek is a concrete continuous slab carrying W 7th over Perry Creek in Woodbury County, Iowa. It was built in 1900, so it is 125 years old, older 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 5,086 vehicles a day, projected to reach 5,086 by 2044. The structure is 157 ft (47.9 m) long and 60 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesW 7th
CrossesPerry Creek
Location000000000
RouteCity Street 0
StateIowa
Coordinates42.49895, -96.40954
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 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.3 US tons
Inventory rating37.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length157 ft (47.9 m)
Longest span45 ft (13.7 m)
Deck width60 ft (18.4 m)
Roadway width55 ft (16.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,086 (2022)
Projected traffic5,086 by 2044
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 W 7th over Perry Creek built?

It was built in 1900, making it 125 years old in 2025.

What condition is W 7th over Perry Creek 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 2024.

How much traffic does W 7th over Perry Creek carry?

About 5,086 vehicles per day (2022 count).

How long is W 7th over Perry Creek?

The structure is 157 ft (47.9 m) long with a longest span of 45 ft (13.7 m) and a deck 60 ft wide.

Who owns W 7th over Perry Creek?

It is owned by the City or Municipal Highway Agency.