US Bridges

Redwood Ave over Dry Run

Good

O'Brien County, Iowa · 095412602 · Structure no. 000000000260261

Built
2023
2 years old
Condition
Good
inspected June 2023
Type
Slab
Concrete Continuous
Length
93 ft
3 main spans
Daily traffic
35
2022 count
Owner
County
County Highway Agency

About this bridge

Redwood Ave over Dry Run is a concrete continuous slab carrying Redwood Ave over Dry Run in O'Brien County, Iowa. It was built in 2023, so it is 2 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 35 vehicles a day, projected to reach 35 by 2043. The structure is 93 ft (28.3 m) long and 27 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesRedwood Ave
CrossesDry Run
Location095412602
RouteCounty Highway 0
CountyO'Brien County
StateIowa
Coordinates43.02511, -95.66343
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating53.6 US tons
Inventory rating41.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length93 ft (28.3 m)
Longest span35 ft (10.7 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2022)
Projected traffic35 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$50,000 (2023 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Redwood Ave over Dry Run built?

It was built in 2023, making it 2 years old in 2025.

What condition is Redwood Ave over Dry Run 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 June 2023.

How much traffic does Redwood Ave over Dry Run carry?

About 35 vehicles per day (2022 count).

How long is Redwood Ave over Dry Run?

The structure is 93 ft (28.3 m) long with a longest span of 35 ft (10.7 m) and a deck 27 ft wide.

Who owns Redwood Ave over Dry Run?

It is owned by the County Highway Agency.