US Bridges

Local Birch Ave over Staff CR

Good

Howard County, Iowa · 100142904 · Structure no. 000000000184081

Built
2008
17 years old
Condition
Good
inspected March 2021
Type
Culvert
Steel
Length
27 ft
2 main spans
Daily traffic
39
2022 count
Owner
County
County Highway Agency

About this bridge

Local Birch Ave over Staff CR is a steel culvert carrying Local Birch Ave over Staff CR in Howard County, Iowa. It was built in 2008, so it is 17 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 39 vehicles a day, projected to reach 39 by 2043. The structure is 27 ft (8.1 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesLocal Birch Ave
CrossesStaff CR
Location100142904
RouteCounty Highway 0
CountyHoward County
StateIowa
Coordinates43.45499, -92.52544
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.
Culvert8 Very GoodNo problems noted.
Last inspectionMarch 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20
Structure length27 ft (8.1 m)
Longest span7 ft (2.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic39 (2022)
Projected traffic39 by 2043
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Local Birch Ave over Staff CR built?

It was built in 2008, making it 17 years old in 2025.

What condition is Local Birch Ave over Staff CR 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 March 2021.

How much traffic does Local Birch Ave over Staff CR carry?

About 39 vehicles per day (2022 count).

How long is Local Birch Ave over Staff CR?

The structure is 27 ft (8.1 m) long with a longest span of 7 ft (2.1 m).

Who owns Local Birch Ave over Staff CR?

It is owned by the County Highway Agency.