US Bridges

175th ST over Drainage Ditch #12

Fair

Clinton County, Iowa · 082E21105 · Structure no. 000000000123181

Built
1980
45 years old
Condition
Fair
inspected April 2024
Type
Tee Beam
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
16
2022 count
Owner
County
County Highway Agency

About this bridge

175th ST over Drainage Ditch #12 is a prestressed concrete tee beam carrying 175th ST over Drainage Ditch #12 in Clinton County, Iowa. It was built in 1980, so it is 45 years old, younger 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 16 vehicles a day, projected to reach 16 by 2044. The structure is 40 ft (12.2 m) long and 20 ft wide.

Location

Open in Google Maps
Carries175th ST
CrossesDrainage Ditch #12
Location082E21105
RouteCounty Highway 0
CountyClinton County
StateIowa
Coordinates41.92348, -90.69871
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating38.9 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span39 ft (11.9 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16 (2022)
Projected traffic16 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 175th ST over Drainage Ditch #12 built?

It was built in 1980, making it 45 years old in 2025.

What condition is 175th ST over Drainage Ditch #12 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 175th ST over Drainage Ditch #12 carry?

About 16 vehicles per day (2022 count).

How long is 175th ST over Drainage Ditch #12?

The structure is 40 ft (12.2 m) long with a longest span of 39 ft (11.9 m) and a deck 20 ft wide.

Who owns 175th ST over Drainage Ditch #12?

It is owned by the County Highway Agency.