US Bridges

Adams ST over Mckinley Lake

Good

Union County, Iowa · 072311101 · Structure no. 000000000002721

Built
2017
8 years old
Condition
Good
inspected October 2020
Type
Slab
Concrete Continuous
Length
70 ft
3 main spans
Daily traffic
1,864
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Adams ST over Mckinley Lake is a concrete continuous slab carrying Adams ST over Mckinley Lake in Union 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 1,864 vehicles a day, projected to reach 1,864 by 2043. The structure is 70 ft (21.3 m) long and 46 ft wide.

Location

Open in Google Maps
CarriesAdams ST
CrossesMckinley Lake
Location072311101
RouteCity Street 0
CountyUnion County
StateIowa
Coordinates41.05732, -94.38273
Functional classUrban Minor Arterial

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 protection8 Very GoodNo problems noted.
Last inspectionOctober 2020
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length70 ft (21.3 m)
Longest span28 ft (8.5 m)
Deck width46 ft (14.1 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,864 (2022)
Projected traffic1,864 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Adams ST over Mckinley Lake built?

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

What condition is Adams ST over Mckinley Lake 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 2020.

How much traffic does Adams ST over Mckinley Lake carry?

About 1,864 vehicles per day (2022 count).

How long is Adams ST over Mckinley Lake?

The structure is 70 ft (21.3 m) long with a longest span of 28 ft (8.5 m) and a deck 46 ft wide.

Who owns Adams ST over Mckinley Lake?

It is owned by the City or Municipal Highway Agency.