US Bridges

Local Birch over Br Upper Ia River

Good

Howard County, Iowa · 100140804 · Structure no. 000000000183961

Built
2008
17 years old
Condition
Good
inspected March 2021
Type
Culvert
Steel
Length
24 ft
3 main spans
Daily traffic
135
2022 count
Owner
County
County Highway Agency

About this bridge

Local Birch over Br Upper Ia River is a steel culvert carrying Local Birch over Br Upper Ia River 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 135 vehicles a day, projected to reach 135 by 2043. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesLocal Birch
CrossesBr Upper Ia River
Location100140804
RouteCounty Highway 0
CountyHoward County
StateIowa
Coordinates43.49115, -92.52558
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 protection7 GoodSome minor problems.
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 adequacy7: Better than present minimum 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 spans3
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span6 ft (1.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic135 (2022)
Projected traffic135 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Birch over Br Upper Ia River built?

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

What condition is Local Birch over Br Upper Ia River 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 over Br Upper Ia River carry?

About 135 vehicles per day (2022 count).

How long is Local Birch over Br Upper Ia River?

The structure is 24 ft (7.3 m) long with a longest span of 6 ft (1.8 m).

Who owns Local Birch over Br Upper Ia River?

It is owned by the County Highway Agency.