US Bridges

FM K-49 over Plymouth CR

Fair

Plymouth County, Iowa · 091450302 · Structure no. 000000000272891

Built
1974
51 years old
Condition
Fair
inspected April 2024
Type
Slab
Concrete Continuous
Length
125 ft
3 main spans
Daily traffic
1,236
2022 count
Owner
County
County Highway Agency

About this bridge

FM K-49 over Plymouth CR is a concrete continuous slab carrying FM K-49 over Plymouth CR in Plymouth County, Iowa. It was built in 1974, so it is 51 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,236 vehicles a day, projected to reach 1,236 by 2044. The structure is 125 ft (38.1 m) long and 32 ft wide.

Location

Open in Google Maps
CarriesFM K-49
CrossesPlymouth CR
Location091450302
RouteCounty Highway 0
CountyPlymouth County
StateIowa
Coordinates42.7293, -96.15604
Functional classRural Major Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.4 US tons
Inventory rating33.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length125 ft (38.1 m)
Longest span49 ft (14.9 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,236 (2022)
Projected traffic1,236 by 2044
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM K-49 over Plymouth CR built?

It was built in 1974, making it 51 years old in 2025.

What condition is FM K-49 over Plymouth CR 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 April 2024.

How much traffic does FM K-49 over Plymouth CR carry?

About 1,236 vehicles per day (2022 count).

How long is FM K-49 over Plymouth CR?

The structure is 125 ft (38.1 m) long with a longest span of 49 ft (14.9 m) and a deck 32 ft wide.

Who owns FM K-49 over Plymouth CR?

It is owned by the County Highway Agency.