US Bridges

Y40 (70th Ave) over Creek

Good

Scott County, Iowa · 078E20501 over Mud Creek · Structure no. 000000000302161

Built
2011
14 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
1,530
2022 count
Owner
County
County Highway Agency

About this bridge

Y40 (70th Ave) over Creek is a concrete continuous culvert carrying Y40 (70th Ave) over Creek in Scott 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 1,530 vehicles a day, projected to reach 1,530 by 2043. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesY40 (70th Ave)
CrossesCreek
Location078E20501 over Mud Creek
RouteCounty Highway 0
CountyScott County
StateIowa
Coordinates41.58451, -90.76495
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 inspectionApril 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 alignment7: Better than present minimum criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,530 (2022)
Projected traffic1,530 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Y40 (70th Ave) over Creek built?

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

What condition is Y40 (70th Ave) over Creek 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 Y40 (70th Ave) over Creek carry?

About 1,530 vehicles per day (2022 count).

How long is Y40 (70th Ave) over Creek?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).

Who owns Y40 (70th Ave) over Creek?

It is owned by the County Highway Agency.