US Bridges

Cth G over Pecatonica River

Poor

Iowa County, Wisconsin · 1.7 Mn JCT Cth E · Structure no. P25003700000000

Built
1973
52 years old
Condition
Poor
inspected October 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
49 ft
1 main span
Daily traffic
327
2024 count
Owner
County
County Highway Agency

About this bridge

Cth G over Pecatonica River is a concrete stringer/multi-beam or girder carrying Cth G over Pecatonica River in Iowa County, Wisconsin. It was built in 1973, so it is 52 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 327 vehicles a day, projected to reach 359 by 2043. The structure is 49 ft (14.8 m) long and 33 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesCth G
CrossesPecatonica River
Location1.7 Mn JCT Cth E
RouteCounty Highway 0G
CountyIowa County
StateWisconsin
Coordinates42.89197, -90.3516
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length49 ft (14.8 m)
Longest span47 ft (14.3 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic327 (2024)
Projected traffic359 by 2043
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$275,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth G over Pecatonica River built?

It was built in 1973, making it 52 years old in 2025.

What condition is Cth G 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 October 2024.

How much traffic does Cth G over Pecatonica River carry?

About 327 vehicles per day (2024 count).

How long is Cth G over Pecatonica River?

The structure is 49 ft (14.8 m) long with a longest span of 47 ft (14.3 m) and a deck 33 ft wide.

Who owns Cth G over Pecatonica River?

It is owned by the County Highway Agency.