US Bridges

180th ST over Drainage Ditch #10

Poor

Hancock County, Iowa · 095262903 · Structure no. 000000000173691

Built
1994
31 years old
Condition
Poor
inspected March 2024
Type
Channel Beam
Concrete
Length
25 ft
1 main span
Daily traffic
21
2022 count
Owner
County
County Highway Agency

About this bridge

180th ST over Drainage Ditch #10 is a concrete channel beam carrying 180th ST over Drainage Ditch #10 in Hancock County, Iowa. It was built in 1994, so it is 31 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 21 vehicles a day, projected to reach 21 by 2044. The structure is 25 ft (7.6 m) long and 22 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
Carries180th ST
CrossesDrainage Ditch #10
Location095262903
RouteCounty Highway 0
CountyHancock County
StateIowa
Coordinates43.02323, -93.95053
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 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
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating52.2 US tons
Inventory rating31.3 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadH 15
Structure length25 ft (7.6 m)
Longest span24 ft (7.3 m)
Deck width22 ft (6.7 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21 (2022)
Projected traffic21 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$17,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 180th ST over Drainage Ditch #10 built?

It was built in 1994, making it 31 years old in 2025.

What condition is 180th ST over Drainage Ditch #10 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 March 2024.

How much traffic does 180th ST over Drainage Ditch #10 carry?

About 21 vehicles per day (2022 count).

How long is 180th ST over Drainage Ditch #10?

The structure is 25 ft (7.6 m) long with a longest span of 24 ft (7.3 m) and a deck 22 ft wide.

Who owns 180th ST over Drainage Ditch #10?

It is owned by the County Highway Agency.