US Bridges

Redwood Ave over Stream

Good

Union County, Iowa · 071293602 · Structure no. 000000000324761

Built
2011
14 years old
Condition
Good
inspected October 2020
Type
Slab
Concrete Continuous
Length
73 ft
3 main spans
Daily traffic
20
2022 count
Owner
County
County Highway Agency

About this bridge

Redwood Ave over Stream is a concrete continuous slab carrying Redwood Ave over Stream in Union County, Iowa. It was built in 2011, so it is 14 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 20 vehicles a day, projected to reach 20 by 2043. The structure is 73 ft (22.3 m) long and 27 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesRedwood Ave
CrossesStream
Location071293602
RouteCounty Highway 0
CountyUnion County
StateIowa
Coordinates40.90178, -94.14785
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2020
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.1 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length73 ft (22.3 m)
Longest span28 ft (8.5 m)
Deck width27 ft (8.3 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2022)
Projected traffic20 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 statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Redwood Ave over Stream built?

It was built in 2011, making it 14 years old in 2025.

What condition is Redwood Ave over Stream 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 October 2020.

How much traffic does Redwood Ave over Stream carry?

About 20 vehicles per day (2022 count).

How long is Redwood Ave over Stream?

The structure is 73 ft (22.3 m) long with a longest span of 28 ft (8.5 m) and a deck 27 ft wide.

Who owns Redwood Ave over Stream?

It is owned by the County Highway Agency.