US Bridges

Gard Ave over Boyer River

Good

Sac County, Iowa · 0893716 · Structure no. 000000000301771

Built
2010
15 years old
Condition
Good
inspected August 2023
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
848
2022 count
Owner
County
County Highway Agency

About this bridge

Gard Ave over Boyer River is a concrete continuous culvert carrying Gard Ave over Boyer River in Sac County, Iowa. It was built in 2010, so it is 15 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 848 vehicles a day, roughly 11% of them trucks, projected to reach 848 by 2043. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesGard Ave
CrossesBoyer River
Location0893716
RouteCounty Highway 0
CountySac County
StateIowa
Coordinates42.52774, -95.22974
Functional classRural Major Collector

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 protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionAugust 2023
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 alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic848 (2022)
Projected traffic848 by 2043
Trucks11%
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 proposedNone recorded
Estimated improvement cost$30,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Gard Ave over Boyer River built?

It was built in 2010, making it 15 years old in 2025.

What condition is Gard Ave over Boyer 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 August 2023.

How much traffic does Gard Ave over Boyer River carry?

About 848 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is Gard Ave over Boyer River?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m).

Who owns Gard Ave over Boyer River?

It is owned by the County Highway Agency.