US Bridges

Sth 57-27th ST over Cmstpp RR

Fair

Milwaukee County, Wisconsin · 0.3M N JCT Sth 59 · Structure no. B40051300010000

Built
1981
44 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
531 ft
5 main spans
Daily traffic
26,328
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Sth 57-27th ST over Cmstpp RR is a steel continuous stringer/multi-beam or girder carrying Sth 57-27th ST over Cmstpp RR in Milwaukee County, Wisconsin. It was built in 1981, so it is 44 years old, older 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 5 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 26,328 vehicles a day, roughly 6% of them trucks, projected to reach 25,800 by 2041. The structure is 531 ft (161.9 m) long and 80 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesSth 57-27th ST
CrossesCmstpp RR
Location0.3M N JCT Sth 59
RouteState Highway 57
CountyMilwaukee County
StateWisconsin
Coordinates43.02666, -87.94766
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.8 US tons
Inventory rating37.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length531 ft (161.9 m)
Longest span140 ft (42.7 m)
Deck width80 ft (24.4 m)
Roadway width62 ft (18.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,328 (2023)
Projected traffic25,800 by 2041
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 57-27th ST over Cmstpp RR built?

It was built in 1981, making it 44 years old in 2025.

What condition is Sth 57-27th ST over Cmstpp RR 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 57-27th ST over Cmstpp RR carry?

About 26,328 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Sth 57-27th ST over Cmstpp RR?

The structure is 531 ft (161.9 m) long with a longest span of 140 ft (42.7 m) and a deck 80 ft wide.

Who owns Sth 57-27th ST over Cmstpp RR?

It is owned by the City or Municipal Highway Agency.