US Bridges

325th ST over Perry Creek

Good

Plymouth County, Iowa · 090472705 · Structure no. 000000000271911

Built
2006
19 years old
Condition
Good
inspected June 2024
Type
Slab
Concrete
Length
125 ft
3 main spans
Daily traffic
319
2022 count
Owner
County
County Highway Agency

About this bridge

325th ST over Perry Creek is a concrete slab carrying 325th ST over Perry Creek in Plymouth County, Iowa. It was built in 2006, so it is 19 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 319 vehicles a day, projected to reach 319 by 2044. The structure is 125 ft (38.1 m) long and 32 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Carries325th ST
CrossesPerry Creek
Location090472705
RouteCounty Highway 0
StateIowa
Coordinates42.5837, -96.38401
Functional classRural Local

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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating97.6 US tons
Inventory rating58.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length125 ft (38.1 m)
Longest span49 ft (14.9 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic319 (2022)
Projected traffic319 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 325th ST over Perry Creek built?

It was built in 2006, making it 19 years old in 2025.

What condition is 325th ST 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 June 2024.

How much traffic does 325th ST over Perry Creek carry?

About 319 vehicles per day (2022 count).

How long is 325th ST over Perry Creek?

The structure is 125 ft (38.1 m) long with a longest span of 49 ft (14.9 m) and a deck 32 ft wide.

Who owns 325th ST over Perry Creek?

It is owned by the County Highway Agency.