US Bridges

F21 270th ST over Barber Creek

Good

Clinton County, Iowa · 081E33203 · Structure no. 000000000122211

Built
2022
3 years old
Condition
Good
inspected June 2024
Type
Slab
Concrete Continuous
Length
151 ft
1 main span
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

F21 270th ST over Barber Creek is a concrete continuous slab carrying F21 270th ST over Barber Creek in Clinton County, Iowa. It was built in 2022, so it is 3 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, projected to reach 100 by 2044. The structure is 151 ft (45.9 m) long and 33 ft wide.

Location

Open in Google Maps
CarriesF21 270th ST
CrossesBarber Creek
Location081E33203
RouteCounty Highway 0
CountyClinton County
StateIowa
Coordinates41.78568, -90.62951
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo 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 evaluation9: Superior 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 rating83.1 US tons
Inventory rating49.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length151 ft (45.9 m)
Longest span146 ft (44.5 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic100 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 F21 270th ST over Barber Creek built?

It was built in 2022, making it 3 years old in 2025.

What condition is F21 270th ST over Barber 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 F21 270th ST over Barber Creek carry?

About 100 vehicles per day (2022 count).

How long is F21 270th ST over Barber Creek?

The structure is 151 ft (45.9 m) long with a longest span of 146 ft (44.5 m) and a deck 33 ft wide.

Who owns F21 270th ST over Barber Creek?

It is owned by the County Highway Agency.