US Bridges

Lone Tree RD over Perry Creek

PoorPosted for load

Plymouth County, Iowa · 090472205 · Structure no. 000000000271890

Built
1953
72 years old
Condition
Poor
inspected June 2024
Type
Stringer/Multi-beam or Girder
Concrete Continuous
Length
150 ft
3 main spans
Daily traffic
71
2022 count
Owner
County
County Highway Agency

About this bridge

Lone Tree RD over Perry Creek is a concrete continuous stringer/multi-beam or girder carrying Lone Tree RD over Perry Creek in Plymouth County, Iowa. It was built in 1953, so it is 72 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 71 vehicles a day, roughly 41% of them trucks, projected to reach 71 by 2044. The structure is 150 ft (45.7 m) long and 23 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesLone Tree RD
CrossesPerry Creek
Location090472205
RouteCounty Highway 0
StateIowa
Coordinates42.59803, -96.37563
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating30.6 US tons
Inventory rating12.6 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length150 ft (45.7 m)
Longest span60 ft (18.3 m)
Deck width23 ft (6.9 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic71 (2022)
Projected traffic71 by 2044
Trucks41%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Lone Tree RD over Perry Creek built?

It was built in 1953, making it 72 years old in 2025.

What condition is Lone Tree RD over Perry 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 June 2024.

How much traffic does Lone Tree RD over Perry Creek carry?

About 71 vehicles per day (2022 count), of which roughly 41% are trucks.

How long is Lone Tree RD over Perry Creek?

The structure is 150 ft (45.7 m) long with a longest span of 60 ft (18.3 m) and a deck 23 ft wide.

Who owns Lone Tree RD over Perry Creek?

It is owned by the County Highway Agency.