US Bridges

Vienna Ave over Pigeon Creek

Poor

Harrison County, Iowa · 079410102 · Structure no. 000000000177810

Built
1967
58 years old, rebuilt 1978
Condition
Poor
inspected December 2023
Type
Truss - Thru
Steel
Length
92 ft
1 main span
Daily traffic
60
2022 count
Owner
County
County Highway Agency

About this bridge

Vienna Ave over Pigeon Creek is a steel truss - thru carrying Vienna Ave over Pigeon Creek in Harrison County, Iowa. It was built in 1967 and reconstructed in 1978, so it is 58 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.

It carries about 60 vehicles a day, projected to reach 60 by 2043. The structure is 92 ft (28 m) long and 20 ft wide.

Location

Open in Google Maps
CarriesVienna Ave
CrossesPigeon Creek
Location079410102
RouteCounty Highway 0
CountyHarrison County
StateIowa
Coordinates41.68326, -95.57713
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating23.1 US tons
Inventory rating16.5 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadOther
Structure length92 ft (28 m)
Longest span90 ft (27.4 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2022)
Projected traffic60 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Vienna Ave over Pigeon Creek built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 1978.

What condition is Vienna Ave over Pigeon 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 December 2023.

How much traffic does Vienna Ave over Pigeon Creek carry?

About 60 vehicles per day (2022 count).

How long is Vienna Ave over Pigeon Creek?

The structure is 92 ft (28 m) long with a longest span of 90 ft (27.4 m) and a deck 20 ft wide.

Who owns Vienna Ave over Pigeon Creek?

It is owned by the County Highway Agency.