US Bridges

Key Ave over Big Whiskey Creek

GoodPosted for load

Plymouth County, Iowa · 090453102 · Structure no. 000000000271530

Built
1952
73 years old, rebuilt 1986
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
70 ft
1 main span
Daily traffic
26
2022 count
Owner
County
County Highway Agency

About this bridge

Key Ave over Big Whiskey Creek is a wood or timber stringer/multi-beam or girder carrying Key Ave over Big Whiskey Creek in Plymouth County, Iowa. It was built in 1952 and reconstructed in 1986, so it is 73 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 26 vehicles a day, projected to reach 26 by 2044. The structure is 70 ft (21.3 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesKey Ave
CrossesBig Whiskey Creek
Location090453102
RouteCounty Highway 0
StateIowa
Coordinates42.57206, -96.21416
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating21.6 US tons
Inventory rating12.9 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1 (+2 approach)
Design loadHS 20
Structure length70 ft (21.3 m)
Longest span40 ft (12.2 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26 (2022)
Projected traffic26 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Key Ave over Big Whiskey Creek built?

It was built in 1952, making it 73 years old in 2025. It was reconstructed in 1986.

What condition is Key Ave over Big Whiskey 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 July 2024.

How much traffic does Key Ave over Big Whiskey Creek carry?

About 26 vehicles per day (2022 count).

How long is Key Ave over Big Whiskey Creek?

The structure is 70 ft (21.3 m) long with a longest span of 40 ft (12.2 m) and a deck 24 ft wide.

Who owns Key Ave over Big Whiskey Creek?

It is owned by the County Highway Agency.