US Bridges

Sth 13/34 over Mill Creek

Good

Portage County, Wisconsin · 1.9M N JCT Cth M · Structure no. B49008200000000

Built
1994
31 years old
Condition
Good
inspected August 2021
Type
Slab
Concrete Continuous
Length
137 ft
3 main spans
Daily traffic
2,600
2021 count
Owner
State
State Highway Agency

About this bridge

Sth 13/34 over Mill Creek is a concrete continuous slab carrying Sth 13/34 over Mill Creek in Portage County, Wisconsin. It was built in 1994, so it is 31 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 2,600 vehicles a day, roughly 11% of them trucks, projected to reach 3,120 by 2041. The structure is 137 ft (41.9 m) long and 38 ft wide. If it were closed, the detour would be 25.5 mi (41 km).

Location

Open in Google Maps
CarriesSth 13/34
CrossesMill Creek
Location1.9M N JCT Cth M
RouteState Highway 13
CountyPortage County
StateWisconsin
Coordinates44.55271, -89.80781
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 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 geometry5: 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 rating68.5 US tons
Inventory rating41.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length137 ft (41.9 m)
Longest span55 ft (16.8 m)
Deck width38 ft (11.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,600 (2021)
Projected traffic3,120 by 2041
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed25.5 mi (41 km)
TollOn a free road
National Highway SystemYes

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 13/34 over Mill Creek built?

It was built in 1994, making it 31 years old in 2025.

What condition is Sth 13/34 over Mill Creek 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 August 2021.

How much traffic does Sth 13/34 over Mill Creek carry?

About 2,600 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is Sth 13/34 over Mill Creek?

The structure is 137 ft (41.9 m) long with a longest span of 55 ft (16.8 m) and a deck 38 ft wide.

Who owns Sth 13/34 over Mill Creek?

It is owned by the State Highway Agency.