US Bridges

Sth 13 over Terwilliger Creek

Good

Bayfield County, Wisconsin · 0.1M N JCT Ush 2 (b) · Structure no. B04011100000000

Built
2019
6 years old
Condition
Good
inspected May 2022
Type
Culvert
Concrete
Length
20 ft
2 main spans
Daily traffic
7,100
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 13 over Terwilliger Creek is a concrete culvert carrying Sth 13 over Terwilliger Creek in Bayfield County, Wisconsin. It was built in 2019, so it is 6 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 7,100 vehicles a day, projected to reach 9,100 by 2039. The structure is 20 ft (6.2 m) long and 88 ft wide. If it were closed, the detour would be 59.7 mi (96 km).

Location

Open in Google Maps
CarriesSth 13
CrossesTerwilliger Creek
Location0.1M N JCT Ush 2 (b)
RouteState Highway 13
CountyBayfield County
StateWisconsin
Coordinates46.58833, -90.95493
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
Channel and channel protection9 ExcellentNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionMay 2022
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.8 US tons
Inventory rating48.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length20 ft (6.2 m)
Longest span9 ft (2.7 m)
Deck width88 ft (26.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,100 (2022)
Projected traffic9,100 by 2039
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed59.7 mi (96 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 13 over Terwilliger Creek built?

It was built in 2019, making it 6 years old in 2025.

What condition is Sth 13 over Terwilliger 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 May 2022.

How much traffic does Sth 13 over Terwilliger Creek carry?

About 7,100 vehicles per day (2022 count).

How long is Sth 13 over Terwilliger Creek?

The structure is 20 ft (6.2 m) long with a longest span of 9 ft (2.7 m) and a deck 88 ft wide.

Who owns Sth 13 over Terwilliger Creek?

It is owned by the State Highway Agency.