US Bridges

Broadway Ave over Winnebago River

PoorPosted for load

Winnebago County, Iowa · 098240103 · Structure no. 000000000007220

Built
1975
50 years old
Condition
Poor
inspected March 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
107 ft
5 main spans
Daily traffic
245
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Broadway Ave over Winnebago River is a wood or timber stringer/multi-beam or girder carrying Broadway Ave over Winnebago River in Winnebago County, Iowa. It was built in 1975, so it is 50 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 245 vehicles a day, roughly 2% of them trucks, projected to reach 245 by 2043. The structure is 107 ft (32.6 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesBroadway Ave
CrossesWinnebago River
Location098240103
RouteCity Street 0
StateIowa
Coordinates43.33716, -93.62786
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating22.3 US tons
Inventory rating15.5 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans5
Design loadUnknown
Structure length107 ft (32.6 m)
Longest span22 ft (6.7 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic245 (2022)
Projected traffic245 by 2043
Trucks2%
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

OwnerCity or Municipal Highway Agency
Maintained byCounty 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$440,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Broadway Ave over Winnebago River built?

It was built in 1975, making it 50 years old in 2025.

What condition is Broadway Ave over Winnebago River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2023.

How much traffic does Broadway Ave over Winnebago River carry?

About 245 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Broadway Ave over Winnebago River?

The structure is 107 ft (32.6 m) long with a longest span of 22 ft (6.7 m) and a deck 24 ft wide.

Who owns Broadway Ave over Winnebago River?

It is owned by the City or Municipal Highway Agency and maintained by the County Highway Agency.