US Bridges

Cth a over Pecatonica River

Poor

Iowa County, Wisconsin · 3.0M E JCT Cth G · Structure no. B25061200000000

Built
1939
86 years old
Condition
Poor
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
87 ft
2 main spans
Daily traffic
650
2022 count
Owner
County
County Highway Agency

About this bridge

Cth a over Pecatonica River is a steel stringer/multi-beam or girder carrying Cth a over Pecatonica River in Iowa County, Wisconsin. It was built in 1939, so it is 86 years old, older than the Wisconsin average of 40.3 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 650 vehicles a day, projected to reach 780 by 2042. The structure is 87 ft (26.4 m) long and 27 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesCth a
CrossesPecatonica River
Location3.0M E JCT Cth G
RouteCounty Highway 0A
CountyIowa County
StateWisconsin
Coordinates42.84208, -90.33844
Functional classRural Major Collector

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 inspectionNovember 2024
Inspection intervalevery 12 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 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 rating52.2 US tons
Inventory rating30.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length87 ft (26.4 m)
Longest span43 ft (13.1 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic650 (2022)
Projected traffic780 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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$439,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth a over Pecatonica River built?

It was built in 1939, making it 86 years old in 2025.

What condition is Cth a over Pecatonica River 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 November 2024.

How much traffic does Cth a over Pecatonica River carry?

About 650 vehicles per day (2022 count).

How long is Cth a over Pecatonica River?

The structure is 87 ft (26.4 m) long with a longest span of 43 ft (13.1 m) and a deck 27 ft wide.

Who owns Cth a over Pecatonica River?

It is owned by the County Highway Agency.