US Bridges

Cth H over Alder Creek

Fair

Winnebago County, Wisconsin · 4.4M S JCT Cth Ah · Structure no. B70092000000000

Built
1932
93 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
31 ft
1 main span
Daily traffic
922
2022 count
Owner
County
County Highway Agency

About this bridge

Cth H over Alder Creek is a concrete stringer/multi-beam or girder carrying Cth H over Alder Creek in Winnebago County, Wisconsin. It was built in 1932, so it is 93 years old, older than the Wisconsin average of 40.3 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.

It carries about 922 vehicles a day, projected to reach 1,014 by 2042. The structure is 31 ft (9.6 m) long and 34 ft wide. If it were closed, the detour would be 12.4 mi (20 km).

Location

Open in Google Maps
CarriesCth H
CrossesAlder Creek
Location4.4M S JCT Cth Ah
RouteCounty Highway 0H
CountyWinnebago County
StateWisconsin
Coordinates44.18458, -88.84587
Functional classRural Major Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating45.2 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length31 ft (9.6 m)
Longest span30 ft (9.1 m)
Deck width34 ft (10.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic922 (2022)
Projected traffic1,014 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed12.4 mi (20 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$225,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth H over Alder Creek built?

It was built in 1932, making it 93 years old in 2025.

What condition is Cth H over Alder 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 October 2023.

How much traffic does Cth H over Alder Creek carry?

About 922 vehicles per day (2022 count).

How long is Cth H over Alder Creek?

The structure is 31 ft (9.6 m) long with a longest span of 30 ft (9.1 m) and a deck 34 ft wide.

Who owns Cth H over Alder Creek?

It is owned by the County Highway Agency.