US Bridges

D55 (290th St) over Branch Wolf Creek

Good

Grundy County, Iowa · 86171101 · Structure no. 000000000163491

Built
2013
12 years old
Condition
Good
inspected April 2024
Type
Culvert
Concrete Continuous
Length
34 ft
2 main spans
Daily traffic
44
2022 count
Owner
County
County Highway Agency

About this bridge

D55 (290th St) over Branch Wolf Creek is a concrete continuous culvert carrying D55 (290th St) over Branch Wolf Creek in Grundy County, Iowa. It was built in 2013, so it is 12 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 44 vehicles a day, projected to reach 44 by 2044. The structure is 34 ft (10.4 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesD55 (290th St)
CrossesBranch Wolf Creek
Location86171101
RouteCounty Highway 0
CountyGrundy County
StateIowa
Coordinates42.28249, -92.78907
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 inspectionApril 2024
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 alignment7: Better than present minimum criteria
Operating rating48.2 US tons
Inventory rating37.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHL 93
Structure length34 ft (10.4 m)
Longest span17 ft (5.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44 (2022)
Projected traffic44 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was D55 (290th St) over Branch Wolf Creek built?

It was built in 2013, making it 12 years old in 2025.

What condition is D55 (290th St) over Branch Wolf 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 April 2024.

How much traffic does D55 (290th St) over Branch Wolf Creek carry?

About 44 vehicles per day (2022 count).

How long is D55 (290th St) over Branch Wolf Creek?

The structure is 34 ft (10.4 m) long with a longest span of 17 ft (5.2 m).

Who owns D55 (290th St) over Branch Wolf Creek?

It is owned by the County Highway Agency.