US Bridges

Sth 13 N.B. over Mill Creek

Good

Wood County, Wisconsin · 0.5M N JCT USH10 · Structure no. B71010600000000

Built
2003
22 years old
Condition
Good
inspected September 2023
Type
Slab
Concrete
Length
44 ft
1 main span
Daily traffic
8,700
2021 count
Owner
State
State Highway Agency

About this bridge

Sth 13 N.B. over Mill Creek is a concrete slab carrying Sth 13 N.B. over Mill Creek in Wood County, Wisconsin. It was built in 2003, so it is 22 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 8,700 vehicles a day, roughly 11% of them trucks, projected to reach 10,440 by 2041. The structure is 44 ft (13.3 m) long and 46 ft wide. If it were closed, the detour would be 10.6 mi (17 km).

Location

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CarriesSth 13 N.B.
CrossesMill Creek
Location0.5M N JCT USH10
RouteState Highway 13
CountyWood County
StateWisconsin
Coordinates44.63267, -90.13988
Functional classRural Principal Arterial - Other

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable 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 rating39.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length44 ft (13.3 m)
Longest span41 ft (12.5 m)
Deck width46 ft (14 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,700 (2021)
Projected traffic10,440 by 2041
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed10.6 mi (17 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 N.B. over Mill Creek built?

It was built in 2003, making it 22 years old in 2025.

What condition is Sth 13 N.B. 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 September 2023.

How much traffic does Sth 13 N.B. over Mill Creek carry?

About 8,700 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is Sth 13 N.B. over Mill Creek?

The structure is 44 ft (13.3 m) long with a longest span of 41 ft (12.5 m) and a deck 46 ft wide.

Who owns Sth 13 N.B. over Mill Creek?

It is owned by the State Highway Agency.