US Bridges

85th Ave over Creek

Good

Scott County, Iowa · 080E23304 · Structure no. 000000000303381

Built
2017
8 years old
Condition
Good
inspected April 2023
Type
Slab
Concrete Continuous
Length
123 ft
3 main spans
Daily traffic
45
2022 count
Owner
County
County Highway Agency

About this bridge

85th Ave over Creek is a concrete continuous slab carrying 85th Ave over Creek in Scott 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 45 vehicles a day, projected to reach 45 by 2043. The structure is 123 ft (37.5 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries85th Ave
CrossesCreek
Location080E23304
RouteCounty Highway 0
StateIowa
Coordinates41.69259, -90.73364
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 protection6 SatisfactoryStructural elements show some minor deterioration.
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
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.1 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length123 ft (37.5 m)
Longest span47 ft (14.3 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45 (2022)
Projected traffic45 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 85th Ave over Creek built?

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

What condition is 85th 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 85th Ave over Creek carry?

About 45 vehicles per day (2022 count).

How long is 85th Ave over Creek?

The structure is 123 ft (37.5 m) long with a longest span of 47 ft (14.3 m) and a deck 33 ft wide.

Who owns 85th Ave over Creek?

It is owned by the County Highway Agency.