US Bridges

Plant Road K over Spring Creek

FairClosed to traffic

Des Moines County, Iowa · Approx. 10 000 E. Rd. H · Structure no. DAPAMCIOW005412

Built
1910
115 years old
Condition
Fair
inspected August 2014
Type
Truss - Thru
Steel
Length
65 ft
1 main span
Daily traffic
5
2014 count
Owner
Federal
Army

About this bridge

Plant Road K over Spring Creek is a steel truss - thru carrying Plant Road K over Spring Creek in Des Moines County, Iowa. It was built in 1910, so it is 115 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: closed to all traffic.

It carries about 5 vehicles a day, roughly 2% of them trucks, projected to reach 10 by 2036. The structure is 65 ft (19.8 m) long and 16 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesPlant Road K
CrossesSpring Creek
LocationApprox. 10 000 E. Rd. H
CountyDes Moines County
StateIowa
Coordinates40.77089, -91.18551
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionAugust 2014
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourFoundations stable; scour above top of footing
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating17.5 US tons
Inventory rating10.1 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length65 ft (19.8 m)
Longest span65 ft (19.8 m)
Deck width16 ft (4.8 m)
Roadway width14 ft (4.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2014)
Projected traffic10 by 2036
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$5,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Plant Road K over Spring Creek built?

It was built in 1910, making it 115 years old in 2025.

What condition is Plant Road K over Spring Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2014.

How much traffic does Plant Road K over Spring Creek carry?

About 5 vehicles per day (2014 count), of which roughly 2% are trucks.

How long is Plant Road K over Spring Creek?

The structure is 65 ft (19.8 m) long with a longest span of 65 ft (19.8 m) and a deck 16 ft wide.

Who owns Plant Road K over Spring Creek?

It is owned by the Army.