US Bridges

Sth 318 over IH 94

Fair

Waukesha County, Wisconsin · 5.1 MI E JCT Sth 83 · Structure no. B67026600000000

Built
2000
25 years old
Condition
Fair
inspected July 2021
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
185 ft
2 main spans
Daily traffic
10,200
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 318 over IH 94 is a prestressed concrete stringer/multi-beam or girder carrying Sth 318 over IH 94 in Waukesha County, Wisconsin. It was built in 2000, so it is 25 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 10,200 vehicles a day, projected to reach 12,240 by 2042. The structure is 185 ft (56.4 m) long and 115 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesSth 318
CrossesIH 94
Location5.1 MI E JCT Sth 83
RouteState Highway 0
CountyWaukesha County
StateWisconsin
Coordinates43.04878, -88.28549
Functional classUrban Other Principal Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.9 US tons
Inventory rating39.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length185 ft (56.4 m)
Longest span90 ft (27.3 m)
Deck width115 ft (35.2 m)
Roadway width97 ft (29.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,200 (2022)
Projected traffic12,240 by 2042
Trucks0%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Sth 318 over IH 94 built?

It was built in 2000, making it 25 years old in 2025.

What condition is Sth 318 over IH 94 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 July 2021.

How much traffic does Sth 318 over IH 94 carry?

About 10,200 vehicles per day (2022 count).

How long is Sth 318 over IH 94?

The structure is 185 ft (56.4 m) long with a longest span of 90 ft (27.3 m) and a deck 115 ft wide.

Who owns Sth 318 over IH 94?

It is owned by the State Highway Agency.