US Bridges

Cth G over Otter Creek

Fair

Forest County, Wisconsin · 0.5M W JCT Cth O · Structure no. P21001800000000

Built
1969
56 years old
Condition
Fair
inspected August 2024
Type
Culvert
Steel
Length
52 ft
2 main spans
Daily traffic
661
2024 count
Owner
County
County Highway Agency

About this bridge

Cth G over Otter Creek is a steel culvert carrying Cth G over Otter Creek in Forest County, Wisconsin. It was built in 1969, so it is 56 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 661 vehicles a day, projected to reach 702 by 2043. The structure is 52 ft (15.8 m) long. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesCth G
CrossesOtter Creek
Location0.5M W JCT Cth O
RouteCounty Highway 0G
CountyForest County
StateWisconsin
Coordinates45.64911, -88.74633
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckCorrugated steel
Main spans2
Design loadH 15
Structure length52 ft (15.8 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic661 (2024)
Projected traffic702 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 Cth G over Otter Creek built?

It was built in 1969, making it 56 years old in 2025.

What condition is Cth G over Otter 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 August 2024.

How much traffic does Cth G over Otter Creek carry?

About 661 vehicles per day (2024 count).

How long is Cth G over Otter Creek?

The structure is 52 ft (15.8 m) long with a longest span of 13 ft (4 m).

Who owns Cth G over Otter Creek?

It is owned by the County Highway Agency.