US Bridges

Grand Ave over Drainage

Good

Polk County, Iowa · Grand Ave · Structure no. 000000000505425

Built
2017
8 years old
Condition
Good
inspected October 2023
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
95
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Grand Ave over Drainage is a concrete continuous culvert carrying Grand Ave over Drainage in Polk County, Iowa. It was built in 2017, so it is 8 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 95 vehicles a day, projected to reach 95 by 2043. The structure is 25 ft (7.6 m) long and 71 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesGrand Ave
CrossesDrainage
LocationGrand Ave
RouteCity Street 0
CountyPolk County
StateIowa
Coordinates41.53842, -93.82327
Functional classUrban 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 protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.7 US tons
Inventory rating24.3 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width71 ft (21.6 m)
Roadway width71 ft (21.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic95 (2022)
Projected traffic95 by 2043
Trucks0%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Grand Ave over Drainage built?

It was built in 2017, making it 8 years old in 2025.

What condition is Grand Ave over Drainage 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 2023.

How much traffic does Grand Ave over Drainage carry?

About 95 vehicles per day (2022 count).

How long is Grand Ave over Drainage?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m) and a deck 71 ft wide.

Who owns Grand Ave over Drainage?

It is owned by the City or Municipal Highway Agency.