US Bridges

Sth 100 Sb/Ryan RD over Cnw RR

Fair

Milwaukee County, Wisconsin · 1.6M E JCT Sth 32 · Structure no. B40053000000000

Built
1985
40 years old, rebuilt 2024
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
145 ft
3 main spans
Daily traffic
7,100
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 100 Sb/Ryan RD over Cnw RR is a steel continuous stringer/multi-beam or girder carrying Sth 100 Sb/Ryan RD over Cnw RR in Milwaukee County, Wisconsin. It was built in 1985 and reconstructed in 2024, so it is 40 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 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 7,100 vehicles a day, roughly 5% of them trucks, projected to reach 8,520 by 2042. The structure is 145 ft (44.1 m) long and 47 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

Open in Google Maps
CarriesSth 100 Sb/Ryan RD
CrossesCnw RR
Location1.6M E JCT Sth 32
RouteState Highway 100
CountyMilwaukee County
StateWisconsin
Coordinates42.86757, -87.88894
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
Deck9 ExcellentNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.8 US tons
Inventory rating37.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length145 ft (44.1 m)
Longest span56 ft (17.1 m)
Deck width47 ft (14.2 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,100 (2022)
Projected traffic8,520 by 2042
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed21.7 mi (35 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 100 Sb/Ryan RD over Cnw RR built?

It was built in 1985, making it 40 years old in 2025. It was reconstructed in 2024.

What condition is Sth 100 Sb/Ryan RD over Cnw 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 2024.

How much traffic does Sth 100 Sb/Ryan RD over Cnw RR carry?

About 7,100 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Sth 100 Sb/Ryan RD over Cnw RR?

The structure is 145 ft (44.1 m) long with a longest span of 56 ft (17.1 m) and a deck 47 ft wide.

Who owns Sth 100 Sb/Ryan RD over Cnw RR?

It is owned by the State Highway Agency.