US Bridges

Sth 59 over Sylvester Creek

Good

Green County, Wisconsin · 3.6 MI N of JCT Sth 11 · Structure no. B23017600000000

Built
2017
8 years old
Condition
Good
inspected June 2023
Type
Culvert
Concrete
Length
20 ft
2 main spans
Daily traffic
2,500
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 59 over Sylvester Creek is a concrete culvert carrying Sth 59 over Sylvester Creek in Green County, Wisconsin. It was built in 2017, so it is 8 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 2,500 vehicles a day, roughly 14% of them trucks, projected to reach 2,800 by 2042. The structure is 20 ft (6.2 m) long. If it were closed, the detour would be 10.6 mi (17 km).

Location

Open in Google Maps
CarriesSth 59
CrossesSylvester Creek
Location3.6 MI N of JCT Sth 11
RouteState Highway 59
CountyGreen County
StateWisconsin
Coordinates42.63431, -89.57247
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length20 ft (6.2 m)
Longest span9 ft (2.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,500 (2022)
Projected traffic2,800 by 2042
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed10.6 mi (17 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 59 over Sylvester Creek built?

It was built in 2017, making it 8 years old in 2025.

What condition is Sth 59 over Sylvester 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 June 2023.

How much traffic does Sth 59 over Sylvester Creek carry?

About 2,500 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is Sth 59 over Sylvester Creek?

The structure is 20 ft (6.2 m) long with a longest span of 9 ft (2.6 m).

Who owns Sth 59 over Sylvester Creek?

It is owned by the State Highway Agency.