US Bridges

240th Street over Pigeon Creek

PoorPosted for load

Harrison County, Iowa · 079411403 · Structure no. 000000000177870

Built
1967
58 years old
Condition
Poor
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
86 ft
2 main spans
Daily traffic
15
2022 count
Owner
County
County Highway Agency

About this bridge

240th Street over Pigeon Creek is a steel stringer/multi-beam or girder carrying 240th Street over Pigeon Creek in Harrison County, Iowa. It was built in 1967, 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. Its operating status is: posted for load restriction.

It carries about 15 vehicles a day, projected to reach 15 by 2043. The structure is 86 ft (26.2 m) long and 16 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries240th Street
CrossesPigeon Creek
Location079411403
RouteCounty Highway 0
StateIowa
Coordinates41.66078, -95.59333
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.
Substructure4 PoorAdvanced section loss, deterioration, 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 statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating24.5 US tons
Inventory rating14.7 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans2
Design loadUnknown
Structure length86 ft (26.2 m)
Longest span49 ft (14.9 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2022)
Projected traffic15 by 2043
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 240th Street over Pigeon Creek built?

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

What condition is 240th Street 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 240th Street over Pigeon Creek carry?

About 15 vehicles per day (2022 count).

How long is 240th Street over Pigeon Creek?

The structure is 86 ft (26.2 m) long with a longest span of 49 ft (14.9 m) and a deck 16 ft wide.

Who owns 240th Street over Pigeon Creek?

It is owned by the County Highway Agency.