US Bridges

110th ST over Floyd River

FairPosted for load

Plymouth County, Iowa · 093440703 · Structure no. 000000000276330

Built
1940
85 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
150 ft
3 main spans
Daily traffic
60
2021 count
Owner
County
County Highway Agency

About this bridge

110th ST over Floyd River is a steel continuous stringer/multi-beam or girder carrying 110th ST over Floyd River in Plymouth County, Iowa. It was built in 1940, so it is 85 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: posted for other load-capacity restriction.

It carries about 60 vehicles a day, projected to reach 60 by 2044. The structure is 150 ft (45.7 m) long and 21 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries110th ST
CrossesFloyd River
Location093440703
RouteCounty Highway 0
CountyPlymouth County
StateIowa
Coordinates42.89527, -96.08169
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being 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 alignment7: Better than present minimum criteria
Operating rating30 US tons
Inventory rating18 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length150 ft (45.7 m)
Longest span59 ft (18 m)
Deck width21 ft (6.5 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2021)
Projected traffic60 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-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 110th ST over Floyd River built?

It was built in 1940, making it 85 years old in 2025.

What condition is 110th ST over Floyd River 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 May 2023.

How much traffic does 110th ST over Floyd River carry?

About 60 vehicles per day (2021 count).

How long is 110th ST over Floyd River?

The structure is 150 ft (45.7 m) long with a longest span of 59 ft (18 m) and a deck 21 ft wide.

Who owns 110th ST over Floyd River?

It is owned by the County Highway Agency.