US Bridges

Sth 173 over Hemlock Creek

Fair

Wood County, Wisconsin · 0.8M N JCT Sth 80 to N · Structure no. B71011600000000

Built
2002
23 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
149 ft
2 main spans
Daily traffic
1,500
2021 count
Owner
State
State Highway Agency

About this bridge

Sth 173 over Hemlock Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying Sth 173 over Hemlock Creek in Wood County, Wisconsin. It was built in 2002, so it is 23 years old, younger than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,500 vehicles a day, roughly 4% of them trucks, projected to reach 1,800 by 2041. The structure is 149 ft (45.3 m) long and 39 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesSth 173
CrossesHemlock Creek
Location0.8M N JCT Sth 80 to N
RouteState Highway 173
Coordinates44.30694, -90.09206
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to 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 rating86.4 US tons
Inventory rating37.5 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length149 ft (45.3 m)
Longest span72 ft (21.9 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (10.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2021)
Projected traffic1,800 by 2041
Trucks4%
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 173 over Hemlock Creek built?

It was built in 2002, making it 23 years old in 2025.

What condition is Sth 173 over Hemlock Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2023.

How much traffic does Sth 173 over Hemlock Creek carry?

About 1,500 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is Sth 173 over Hemlock Creek?

The structure is 149 ft (45.3 m) long with a longest span of 72 ft (21.9 m) and a deck 39 ft wide.

Who owns Sth 173 over Hemlock Creek?

It is owned by the State Highway Agency.