US Bridges

Willson Ave over Brewer Creek

Fair

Hamilton County, Iowa · 000000000 · Structure no. 000000000012310

Built
1920
105 years old, rebuilt 2014
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
45 ft
1 main span
Daily traffic
377
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Willson Ave over Brewer Creek is a steel stringer/multi-beam or girder carrying Willson Ave over Brewer Creek in Hamilton County, Iowa. It was built in 1920 and reconstructed in 2014, so it is 105 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 6 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 377 vehicles a day, projected to reach 377 by 2043. The structure is 45 ft (13.7 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesWillson Ave
CrossesBrewer Creek
Location000000000
RouteCity Street 0
CountyHamilton County
StateIowa
Coordinates42.45765, -93.81932
Functional classUrban Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum 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 rating56.4 US tons
Inventory rating33.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length45 ft (13.7 m)
Longest span45 ft (13.7 m)
Deck width31 ft (9.6 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic377 (2022)
Projected traffic377 by 2043
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Willson Ave over Brewer Creek built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 2014.

What condition is Willson Ave over Brewer Creek 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 October 2023.

How much traffic does Willson Ave over Brewer Creek carry?

About 377 vehicles per day (2022 count).

How long is Willson Ave over Brewer Creek?

The structure is 45 ft (13.7 m) long with a longest span of 45 ft (13.7 m) and a deck 31 ft wide.

Who owns Willson Ave over Brewer Creek?

It is owned by the City or Municipal Highway Agency.