US Bridges

Mills ST over Little Bear Creek

Good

Poweshiek County, Iowa · 080142307 · Structure no. 000000000000851

Built
2011
14 years old
Condition
Good
inspected December 2023
Type
Slab
Concrete Continuous
Length
141 ft
3 main spans
Daily traffic
270
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mills ST over Little Bear Creek is a concrete continuous slab carrying Mills ST over Little Bear Creek in Poweshiek County, Iowa. It was built in 2011, so it is 14 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 270 vehicles a day, projected to reach 270 by 2043. The structure is 141 ft (43 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMills ST
CrossesLittle Bear Creek
Location080142307
RouteCity Street 0
StateIowa
Coordinates41.72685, -92.44049
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 inspectionDecember 2023
Inspection intervalevery 48 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating59.6 US tons
Inventory rating46.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length141 ft (43 m)
Longest span55 ft (16.8 m)
Deck width27 ft (8.3 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic270 (2022)
Projected traffic270 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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$30,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mills ST over Little Bear Creek built?

It was built in 2011, making it 14 years old in 2025.

What condition is Mills ST over Little Bear 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 December 2023.

How much traffic does Mills ST over Little Bear Creek carry?

About 270 vehicles per day (2022 count).

How long is Mills ST over Little Bear Creek?

The structure is 141 ft (43 m) long with a longest span of 55 ft (16.8 m) and a deck 27 ft wide.

Who owns Mills ST over Little Bear Creek?

It is owned by the City or Municipal Highway Agency.