US Bridges

Sth 100-RYAN RD over Br Oak Creek

Fair

Milwaukee County, Wisconsin · 2.7M N JCT Sth 32 · Structure no. B40041100000000

Built
1972
53 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete Continuous
Length
36 ft
3 main spans
Daily traffic
24,700
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 100-RYAN RD over Br Oak Creek is a concrete continuous culvert carrying Sth 100-RYAN RD over Br Oak Creek in Milwaukee County, Wisconsin. It was built in 1972, so it is 53 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 24,700 vehicles a day, roughly 3% of them trucks, projected to reach 29,640 by 2042. The structure is 36 ft (11 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesSth 100-RYAN RD
CrossesBr Oak Creek
Location2.7M N JCT Sth 32
RouteState Highway 100
CountyMilwaukee County
StateWisconsin
Coordinates42.87224, -87.92216
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
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating28.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length36 ft (11 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,700 (2022)
Projected traffic29,640 by 2042
Trucks3%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Sth 100-RYAN RD over Br Oak Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is Sth 100-RYAN RD over Br Oak 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 November 2024.

How much traffic does Sth 100-RYAN RD over Br Oak Creek carry?

About 24,700 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Sth 100-RYAN RD over Br Oak Creek?

The structure is 36 ft (11 m) long with a longest span of 11 ft (3.4 m).

Who owns Sth 100-RYAN RD over Br Oak Creek?

It is owned by the State Highway Agency.