US Bridges

Sumner Ave SW over West Des Moines River

Good

Humboldt County, Iowa · 0.5 MI E of US169 · Structure no. 000000000006141

Built
2015
10 years old
Condition
Good
inspected March 2024
Type
Slab
Concrete Continuous
Length
266 ft
5 main spans
Daily traffic
3,472
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Sumner Ave SW over West Des Moines River is a concrete continuous slab carrying Sumner Ave SW over West Des Moines River in Humboldt County, Iowa. It was built in 2015, so it is 10 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 3,472 vehicles a day, projected to reach 3,472 by 2044. The structure is 266 ft (81 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSumner Ave SW
CrossesWest Des Moines River
Location0.5 MI E of US169
RouteCity Street 0
CountyHumboldt County
StateIowa
Coordinates42.72094, -94.22231
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.4 US tons
Inventory rating37.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHL 93
Structure length266 ft (81 m)
Longest span54 ft (16.6 m)
Deck width39 ft (11.9 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,472 (2022)
Projected traffic3,472 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 Sumner Ave SW over West Des Moines River built?

It was built in 2015, making it 10 years old in 2025.

What condition is Sumner Ave SW over West Des Moines River 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 March 2024.

How much traffic does Sumner Ave SW over West Des Moines River carry?

About 3,472 vehicles per day (2022 count).

How long is Sumner Ave SW over West Des Moines River?

The structure is 266 ft (81 m) long with a longest span of 54 ft (16.6 m) and a deck 39 ft wide.

Who owns Sumner Ave SW over West Des Moines River?

It is owned by the City or Municipal Highway Agency.