US Bridges

Redwood Ave over Dutch Branch

Good

Shelby County, Iowa · 078381602 · Structure no. 000000000304291

Built
2014
11 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
87 ft
1 main span
Daily traffic
51
2022 count
Owner
County
County Highway Agency

About this bridge

Redwood Ave over Dutch Branch is a steel stringer/multi-beam or girder carrying Redwood Ave over Dutch Branch in Shelby County, Iowa. It was built in 2014, so it is 11 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 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 51 vehicles a day, roughly 27% of them trucks, projected to reach 51 by 2043. The structure is 87 ft (26.5 m) long and 24 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesRedwood Ave
CrossesDutch Branch
Location078381602
RouteCounty Highway 0
CountyShelby County
StateIowa
Coordinates41.55783, -95.23194
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53 US tons
Inventory rating43 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1 (+2 approach)
Design loadHS 20
Structure length87 ft (26.5 m)
Longest span42 ft (12.8 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51 (2022)
Projected traffic51 by 2043
Trucks27%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Redwood Ave over Dutch Branch built?

It was built in 2014, making it 11 years old in 2025.

What condition is Redwood Ave over Dutch Branch 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 2023.

How much traffic does Redwood Ave over Dutch Branch carry?

About 51 vehicles per day (2022 count), of which roughly 27% are trucks.

How long is Redwood Ave over Dutch Branch?

The structure is 87 ft (26.5 m) long with a longest span of 42 ft (12.8 m) and a deck 24 ft wide.

Who owns Redwood Ave over Dutch Branch?

It is owned by the County Highway Agency.