US Bridges

Local Road over Humpal Creek

Fair

Winneshiek County, Iowa · 097090201 · Structure no. 000000000346911

Built
1900
125 years old, rebuilt 1977
Condition
Fair
inspected November 2023
Type
Channel Beam
Concrete
Length
33 ft
1 main span
Daily traffic
78
2022 count
Owner
County
County Highway Agency

About this bridge

Local Road over Humpal Creek is a concrete channel beam carrying Local Road over Humpal Creek in Winneshiek County, Iowa. It was built in 1900 and reconstructed in 1977, so it is 125 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 78 vehicles a day, projected to reach 78 by 2043. The structure is 33 ft (10.1 m) long and 22 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesLocal Road
CrossesHumpal Creek
Location097090201
RouteCounty Highway 0
CountyWinneshiek County
StateIowa
Coordinates43.25531, -91.86914
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating21.6 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length33 ft (10.1 m)
Longest span29 ft (8.8 m)
Deck width22 ft (6.8 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic78 (2022)
Projected traffic78 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Local Road over Humpal Creek built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1977.

What condition is Local Road over Humpal Creek 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 November 2023.

How much traffic does Local Road over Humpal Creek carry?

About 78 vehicles per day (2022 count).

How long is Local Road over Humpal Creek?

The structure is 33 ft (10.1 m) long with a longest span of 29 ft (8.8 m) and a deck 22 ft wide.

Who owns Local Road over Humpal Creek?

It is owned by the County Highway Agency.