Skip to main content

click zoom to display a high-res image
Property Record

345 W St Paul Ave

Historic Name:
U.S. Post Office
Other Name:
U.S. Post Office
Reference Number:
115143

Property Location

Location (Address)
345 W St Paul Ave
County
Milwaukee
City/Village
Milwaukee
Township
Unincorporated community
Town
Range
Direction
Section
Quarter Section
Quarter Quarter Section

Property Features

Year Built
1968
Additions
1968
Survey Date
1984,2015,2010,2025
Historic Use
Architectural Style
Structural System
Wall Material
Limestone
Architect
Miller, Waltz, Diedrich,Ammann & Whitney - engineer
Other Buildings On Site
Demolished
No
Demolished Date
Additional Comments
Brutalist style. 2010: This massive four-story, flat-roof postal processing facility was constructed in 1968 in the Brutalist style. The main (north) facade is two-blocks long and is defined by a broad, flat, concrete canopy supported by concrete-enclosed, wrap-around stairwell elements. This canopy protects an extended series of vehicle entrances on the first level and facade-length series of narrow plate-glass windows highlighted with metal panels. A large, concrete, circular vehicle ramp is located at the building's northeast corner. This ramp leads to an elevated vehicle deck enclosed by rusted metal panels. The building's upper portion is sheathed with large, multi-color limestone blocks and a broad, bare, concrete parapet encircles the building. This building was constructed in 1968 and designed by architecture firm of Miller, Waltz & Dietrich as the main post office and postal processing facility for the City of Milwaukee. It was built by the firm of Ammann & Whitney and the building won a design award from the American Institute of Architects. It continues to operate as a post office and mail processing facility. Resurveyed for Milwaukee Downtown Connector Arch/History Survey, SHPO#10-0983, Prepared by Heritage Research (2010). When postal service automation arrived in the 1960s, Milwaukee’s Federal Building could not accommodate the new machinery. The 900-foot-long, rectangular design sandwiches a band of Lannon stone cladding between two pre-cast concrete layers, with a concrete parapet hiding the mechanical systems. A rail siding feeds into its south side and mail trucks use a spiral ramp on its east side. In addition to its role as Milwaukee’s Main Post Office with counter service and 20,000 lockboxes, it is the largest processing and distribution center in Wisconsin, employing 3,600 people. Seven million pieces of mail pass through letter and package sorters daily, moved within the plant by a conveyor system. "As this booklet goes to press, construction of the multi-million dollar United States Post Office of Milwaukee has begun. Regional mail collection and distribution facilities currently quartered in several structures in various parts of the city will be brought together in the new building, scheduled for completion in mid-1968. Housing the most sophisticated mechanized mail handling equipment and located on major transportation routes, the new Post Office will bring more rapid, efficient postal service to the community. Such building materials as concrete, native stone, and weathering steel (used here for the first time in a downtown Milwaukee structure) will be components of a design characterized by the dignity, solidity, and monumentality appropriate to governmental architecture. Both the Post Office and nearby Milwaukee Road Depot should serve to stimulate further renewal and redevelopment of this section of Milwaukee." Pagel, Mary Ellen & Virginia A Palmer, University Extension The University of Wisconsin, Guides to Historic Milwaukee: Kilbourntown Walking Tour, 1967. 2025; The Brutalist-style U.S. Post Office was designed by Miller, Waltz, & Dietrich in 1968. This mail facility is four stories high and two blocks long. It has a concrete and stone exterior, a broad concrete parapet, and a flat roof. Its footprint is defined by a wide concrete canopy supported by curved and enclosed stairwells and square piers. This canopy shades a lengthy series of entrance bays on the first level and facade-length rows of narrow plate-glass windows, metal panels, and limestone cladding. A concrete wheel ramp spirals upwards at the building's northeast corner. This ramp leads to a raised parking deck enclosed by metal caging and a heavy entablature punctured by scuppers and vertical supports. A rail spur connects at the east. This resource was evaluated for the National Register under Criteria A, B, and C. The building was constructed to accommodate the new machinery introduced by 1960’s postal service automation. At the time of its opening, it served as the main post office and postal processing facility for the City of Milwaukee, and the building continues to operate as such. In addition to its role as Milwaukee’s Main Post Office, it is the largest processing and distribution center in Wisconsin. Preliminary research does not suggest any potential significance under Criterion A: History or Criterion B: People. Under Criterion C: Architecture, the property is recommended potentially eligible as an example of a postal processing facility type and an intact representation of the Brutalist style. The property is a unique example of Brutalist style architecture within the context of Milwaukee due to its inclusion of stone cladding and spiral forms. The building received a design award from the American Institute of Architects in 1968.
Bibliographic References
City of Milwaukee Central Business District Historic Resources Survey, Vol. 2. City of Milwaukee Intensive Survey Form--345 W. St. Paul Avenue Buildings of Wisconsin manuscript. Pagel, Mary Ellen & Virginia A Palmer, University Extension The University of Wisconsin, Guides to Historic Milwaukee: Kilbourntown Walking Tour, 1967.

National And State Register Of Historic Places Listings

National/State Register Listing Name
Not Listed
National Register Listing Date
State Register Listing Date
Contributing
Permalink
Permalink

Architecture & History Inventory

The Wisconsin Architecture and History Inventory (AHI) is a digital source of information on historic buildings, structures, and objects that have been surveyed by the State Historic Preservation Office in Wisconsin. Each property has a digital record providing basic information about the property and images.

Learn More about AHI

Contact Us

Questions?

Wondering about if your property is eligible or notice some information on this property needs to be updated, reach out today!

Email Us

Attribution

For a credit line: Wisconsin Historical Society, Creator, Title, Unique Identifier. 

The Unique Identifier can be found at the top or bottom of the page for each item. The name of a downloaded file is NOT the unique identifier.

For bibliographic citations please consult the UW-Madison Libraries Citation Research Guide to ensure compliance with appropriate style guidelines.

 

Access Property Records

Some properties have more materials (correspondence, clippings, historical information, etc.) not in the digital record. If a 'Site File' exists, it's noted in the 'Additional Comments' field. Contact us for an appointment to view these materials.

Schedule Appointment

Property Record
99 W 2ND ST

99 W 2ND ST

202181

Located in Fond du Lac, Fond du Lac County

View Property
Property Record
103, 105 & 109 E SILVER SPRING DR

103, 105 & 109 E SILVER SPRING DR

199281

Located in Whitefish Bay, Milwaukee County

View Property
Property Record
1620 E CAPTIOL DRIVE

1620 E CAPTIOL DRIVE

74453

Located in Shorewood, Milwaukee County

View Property
Property Record
136 E 1st Street

136 E 1st Street

237482

Located in New Richmond, St. Croix County

View Property
Property Record
17 S RIVER ST

17 S RIVER ST

87467

Located in Janesville, Rock County

View Property
National or State Regi...
903 Superior Ave.

903 Superior Ave.

00001498

Located in Tomah, Monroe County

View Listing
Go to top
Wisconsin Historical Society
Search Dropdown