US Bridges

Willow Ave over Bohemian Creek

Poor

Howard County, Iowa · 097110202 · Structure no. 000000000028800

Built
1951
74 years old
Condition
Poor
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
65 ft
1 main span
Daily traffic
1,420
2021 count
Owner
County
County Highway Agency

About this bridge

Willow Ave over Bohemian Creek is a steel stringer/multi-beam or girder carrying Willow Ave over Bohemian Creek in Howard County, Iowa. It was built in 1951, so it is 74 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 3 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.

It carries about 1,420 vehicles a day, roughly 22% of them trucks, projected to reach 1,420 by 2043. The structure is 65 ft (19.8 m) long and 32 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

CarriesWillow Ave
CrossesBohemian Creek
Location097110202
RouteCounty Highway 0
StateIowa
Coordinates43.25203, -92.12082
Functional classRural Major Collector

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
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.8 US tons
Inventory rating20.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length65 ft (19.8 m)
Longest span61 ft (18.6 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,420 (2021)
Projected traffic1,420 by 2043
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.2 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Willow Ave over Bohemian Creek built?

It was built in 1951, making it 74 years old in 2025.

What condition is Willow Ave over Bohemian Creek 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 April 2023.

How much traffic does Willow Ave over Bohemian Creek carry?

About 1,420 vehicles per day (2021 count), of which roughly 22% are trucks.

How long is Willow Ave over Bohemian Creek?

The structure is 65 ft (19.8 m) long with a longest span of 61 ft (18.6 m) and a deck 32 ft wide.

Who owns Willow Ave over Bohemian Creek?

It is owned by the County Highway Agency.