US Bridges

Ush 18 (w Blue Mou over Underwood Creek

Fair

Milwaukee County, Wisconsin · 5.0M E JCT Cth Y · Structure no. B40016800000000

Built
1962
63 years old
Condition
Fair
inspected August 2024
Type
Slab
Concrete Continuous
Length
94 ft
3 main spans
Daily traffic
21,900
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Ush 18 (w Blue Mou over Underwood Creek is a concrete continuous slab carrying Ush 18 (w Blue Mou over Underwood Creek in Milwaukee County, Wisconsin. It was built in 1962, so it is 63 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 21,900 vehicles a day, roughly 3% of them trucks, projected to reach 28,074 by 2043. The structure is 94 ft (28.7 m) long and 108 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

Location

Open in Google Maps
CarriesUsh 18 (w Blue Mou
CrossesUnderwood Creek
Location5.0M E JCT Cth Y
RouteU.S. Route 18
CountyMilwaukee County
StateWisconsin
Coordinates43.03638, -88.06707
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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 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
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.2 US tons
Inventory rating26.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length94 ft (28.7 m)
Longest span36 ft (11 m)
Deck width108 ft (32.9 m)
Roadway width70 ft (21.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,900 (2022)
Projected traffic28,074 by 2043
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed7.5 mi (12 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ush 18 (w Blue Mou over Underwood Creek built?

It was built in 1962, making it 63 years old in 2025.

What condition is Ush 18 (w Blue Mou over Underwood 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 August 2024.

How much traffic does Ush 18 (w Blue Mou over Underwood Creek carry?

About 21,900 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Ush 18 (w Blue Mou over Underwood Creek?

The structure is 94 ft (28.7 m) long with a longest span of 36 ft (11 m) and a deck 108 ft wide.

Who owns Ush 18 (w Blue Mou over Underwood Creek?

It is owned by the City or Municipal Highway Agency.