US Bridges

270th ST over Big Whiskey Creek

Good

Plymouth County, Iowa · 9145330110 · Structure no. 000000000273181

Built
2016
9 years old
Condition
Good
inspected April 2024
Type
Slab
Concrete Continuous
Length
80 ft
1 main span
Daily traffic
26
2022 count
Owner
County
County Highway Agency

About this bridge

270th ST over Big Whiskey Creek is a concrete continuous slab carrying 270th ST over Big Whiskey Creek in Plymouth County, Iowa. It was built in 2016, so it is 9 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 26 vehicles a day, projected to reach 26 by 2044. The structure is 80 ft (24.4 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Carries270th ST
CrossesBig Whiskey Creek
Location9145330110
RouteCounty Highway 0
StateIowa
Coordinates42.66356, -96.16789
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 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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.3 US tons
Inventory rating42.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHL 93
Structure length80 ft (24.4 m)
Longest span31 ft (9.4 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 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 closed3.1 mi (5 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 270th ST over Big Whiskey Creek built?

It was built in 2016, making it 9 years old in 2025.

What condition is 270th ST 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 April 2024.

How much traffic does 270th ST over Big Whiskey Creek carry?

About 26 vehicles per day (2022 count).

How long is 270th ST over Big Whiskey Creek?

The structure is 80 ft (24.4 m) long with a longest span of 31 ft (9.4 m) and a deck 33 ft wide.

Who owns 270th ST over Big Whiskey Creek?

It is owned by the County Highway Agency.