US Bridges

90th Ave over Creek

Good

Scott County, Iowa · 080E22106 · Structure no. 000000000303271

Built
2002
23 years old
Condition
Good
inspected April 2023
Type
Slab
Concrete Continuous
Length
159 ft
5 main spans
Daily traffic
90
2022 count
Owner
County
County Highway Agency

About this bridge

90th Ave over Creek is a concrete continuous slab carrying 90th Ave over Creek in Scott County, Iowa. It was built in 2002, so it is 23 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 90 vehicles a day, projected to reach 90 by 2043. The structure is 159 ft (48.5 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries90th Ave
CrossesCreek
Location080E22106
RouteCounty Highway 0
StateIowa
Coordinates41.71816, -90.72469
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating82.1 US tons
Inventory rating49.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length159 ft (48.5 m)
Longest span34 ft (10.4 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90 (2022)
Projected traffic90 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 90th Ave over Creek built?

It was built in 2002, making it 23 years old in 2025.

What condition is 90th 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 90th Ave over Creek carry?

About 90 vehicles per day (2022 count).

How long is 90th Ave over Creek?

The structure is 159 ft (48.5 m) long with a longest span of 34 ft (10.4 m) and a deck 33 ft wide.

Who owns 90th Ave over Creek?

It is owned by the County Highway Agency.