US Bridges

175th ST over Br Little Wapsipinicon

GoodPosted for load

Howard County, Iowa · 098143607 · Structure no. 000000000182800

Built
1955
70 years old, rebuilt 2009
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
47 ft
2 main spans
Daily traffic
11
2022 count
Owner
County
County Highway Agency

About this bridge

175th ST over Br Little Wapsipinicon is a wood or timber stringer/multi-beam or girder carrying 175th ST over Br Little Wapsipinicon in Howard County, Iowa. It was built in 1955 and reconstructed in 2009, so it is 70 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 11 vehicles a day, projected to reach 11 by 2044. The structure is 47 ft (14.3 m) long and 24 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Carries175th ST
CrossesBr Little Wapsipinicon
Location098143607
RouteCounty Highway 0
StateIowa
Coordinates43.26264, -92.44281
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38 US tons
Inventory rating30.1 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadUnknown
Structure length47 ft (14.3 m)
Longest span22 ft (6.7 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11 (2022)
Projected traffic11 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 175th ST over Br Little Wapsipinicon built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 2009.

What condition is 175th ST over Br Little Wapsipinicon in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2024.

How much traffic does 175th ST over Br Little Wapsipinicon carry?

About 11 vehicles per day (2022 count).

How long is 175th ST over Br Little Wapsipinicon?

The structure is 47 ft (14.3 m) long with a longest span of 22 ft (6.7 m) and a deck 24 ft wide.

Who owns 175th ST over Br Little Wapsipinicon?

It is owned by the County Highway Agency.