US Bridges

Plant Road FS-12 over Long Creek

Poor

Des Moines County, Iowa · Approx. 3000 N. of RD I · Structure no. DAPAMCIOW005491

Built
2003
22 years old
Condition
Poor
inspected April 2024
Type
Culvert
Steel
Length
32 ft
2 main spans
Daily traffic
10
2022 count
Owner
Federal
Army

About this bridge

Plant Road FS-12 over Long Creek is a steel culvert carrying Plant Road FS-12 over Long Creek in Des Moines County, Iowa. It was built in 2003, so it is 22 years old, younger 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 10 vehicles a day, roughly 2% of them trucks, projected to reach 15 by 2046. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesPlant Road FS-12
CrossesLong Creek
LocationApprox. 3000 N. of RD I
CountyDes Moines County
StateIowa
Coordinates40.7937, -91.27946
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionApril 2024
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
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating107.1 US tons
Inventory rating107.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length32 ft (9.8 m)
Longest span15 ft (4.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2022)
Projected traffic15 by 2046
Trucks2%
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

OwnerArmy
Maintained byArmy
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$20,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Plant Road FS-12 over Long Creek built?

It was built in 2003, making it 22 years old in 2025.

What condition is Plant Road FS-12 over Long 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 2024.

How much traffic does Plant Road FS-12 over Long Creek carry?

About 10 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Plant Road FS-12 over Long Creek?

The structure is 32 ft (9.8 m) long with a longest span of 15 ft (4.5 m).

Who owns Plant Road FS-12 over Long Creek?

It is owned by the Army.