US Bridges

Cth a over Blue Mounds Branch

Fair

Iowa County, Wisconsin · 1.4M E JCT Cth F · Structure no. P25013500000000

Built
1974
51 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
45 ft
1 main span
Daily traffic
300
2022 count
Owner
County
County Highway Agency

About this bridge

Cth a over Blue Mounds Branch is a concrete stringer/multi-beam or girder carrying Cth a over Blue Mounds Branch in Iowa County, Wisconsin. It was built in 1974, so it is 51 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 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 300 vehicles a day, projected to reach 360 by 2042. The structure is 45 ft (13.6 m) long and 33 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesCth a
CrossesBlue Mounds Branch
Location1.4M E JCT Cth F
RouteCounty Highway 0A
CountyIowa County
StateWisconsin
Coordinates42.87922, -89.86025
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.6 US tons
Inventory rating39.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length45 ft (13.6 m)
Longest span44 ft (13.4 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2022)
Projected traffic360 by 2042
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 a over Blue Mounds Branch built?

It was built in 1974, making it 51 years old in 2025.

What condition is Cth a over Blue Mounds Branch 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 2024.

How much traffic does Cth a over Blue Mounds Branch carry?

About 300 vehicles per day (2022 count).

How long is Cth a over Blue Mounds Branch?

The structure is 45 ft (13.6 m) long with a longest span of 44 ft (13.4 m) and a deck 33 ft wide.

Who owns Cth a over Blue Mounds Branch?

It is owned by the County Highway Agency.