US Bridges

Sth 39 over Blue Mounds Branch

Good

Iowa County, Wisconsin · 2.0 Mi. E of Cth F · Structure no. B25016500000000

Built
2013
12 years old
Condition
Good
inspected September 2021
Type
Slab
Concrete Continuous
Length
92 ft
2 main spans
Daily traffic
800
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 39 over Blue Mounds Branch is a concrete continuous slab carrying Sth 39 over Blue Mounds Branch in Iowa County, Wisconsin. It was built in 2013, so it is 12 years old, younger than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 800 vehicles a day, projected to reach 960 by 2042. The structure is 92 ft (28 m) long and 33 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesSth 39
CrossesBlue Mounds Branch
Location2.0 Mi. E of Cth F
RouteState Highway 39
CountyIowa County
StateWisconsin
Coordinates42.85906, -89.85856
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than 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 rating50 US tons
Inventory rating38.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length92 ft (28 m)
Longest span48 ft (14.6 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic800 (2022)
Projected traffic960 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Sth 39 over Blue Mounds Branch built?

It was built in 2013, making it 12 years old in 2025.

What condition is Sth 39 over Blue Mounds Branch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2021.

How much traffic does Sth 39 over Blue Mounds Branch carry?

About 800 vehicles per day (2022 count).

How long is Sth 39 over Blue Mounds Branch?

The structure is 92 ft (28 m) long with a longest span of 48 ft (14.6 m) and a deck 33 ft wide.

Who owns Sth 39 over Blue Mounds Branch?

It is owned by the State Highway Agency.