US Bridges

Local over West Branch Mill Creek

Good

O'Brien County, Iowa · 096412901 · Structure no. 000000000261110

Built
1966
59 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete Continuous
Length
24 ft
2 main spans
Daily traffic
46
2022 count
Owner
County
County Highway Agency

About this bridge

Local over West Branch Mill Creek is a concrete continuous culvert carrying Local over West Branch Mill Creek in O'Brien County, Iowa. It was built in 1966, so it is 59 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.

It carries about 46 vehicles a day, projected to reach 46 by 2044. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 3.7 mi (6 km).

CarriesLocal
CrossesWest Branch Mill Creek
Location096412901
RouteCounty Highway 0
StateIowa
Coordinates43.11349, -95.71523
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45 US tons
Inventory rating22.2 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic46 (2022)
Projected traffic46 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Local over West Branch Mill Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is Local over West Branch Mill 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 Local over West Branch Mill Creek carry?

About 46 vehicles per day (2022 count).

How long is Local over West Branch Mill Creek?

The structure is 24 ft (7.3 m) long with a longest span of 12 ft (3.7 m).

Who owns Local over West Branch Mill Creek?

It is owned by the County Highway Agency.