US Bridges

13th ST NE over Winnebago River

Fair

Cerro Gordo County, Iowa · 000000000 · Structure no. 000000000008040

Built
1938
87 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete Continuous
Length
102 ft
2 main spans
Daily traffic
9,091
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

13th ST NE over Winnebago River is a concrete continuous slab carrying 13th ST NE over Winnebago River in Cerro Gordo County, Iowa. It was built in 1938, so it is 87 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 9,091 vehicles a day, projected to reach 9,091 by 2044. The structure is 102 ft (31.1 m) long and 48 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries13th ST NE
CrossesWinnebago River
Location000000000
RouteCity Street 0
CountyCerro Gordo County
StateIowa
Coordinates43.16325, -93.19315
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.9 US tons
Inventory rating23.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length102 ft (31.1 m)
Longest span51 ft (15.5 m)
Deck width48 ft (14.7 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,091 (2022)
Projected traffic9,091 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$575,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 13th ST NE over Winnebago River built?

It was built in 1938, making it 87 years old in 2025.

What condition is 13th ST NE over Winnebago River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2024.

How much traffic does 13th ST NE over Winnebago River carry?

About 9,091 vehicles per day (2022 count).

How long is 13th ST NE over Winnebago River?

The structure is 102 ft (31.1 m) long with a longest span of 51 ft (15.5 m) and a deck 48 ft wide.

Who owns 13th ST NE over Winnebago River?

It is owned by the City or Municipal Highway Agency.