https://upiunderground.com/home daily 1.0 2026-03-26 https://images.squarespace-cdn.com/content/v1/624f2baec6d73727b616515f/1649357137008-5HVJ0NDH4I02Q0J8XBCH/4.jpg UPI LLC https://images.squarespace-cdn.com/content/v1/624f2baec6d73727b616515f/1649358250343-RYS6QMBZ4SHS4ZUSC5QU/IMG_20180312_095203445.jpg UPI LLC https://images.squarespace-cdn.com/content/v1/624f2baec6d73727b616515f/1649358377896-5KFJTZECC10280WBPIW9/2.jpg UPI LLC https://images.squarespace-cdn.com/content/v1/624f2baec6d73727b616515f/1649358517678-QXBERFVALAUGEY6RFKOM/7.jpg UPI LLC https://images.squarespace-cdn.com/content/v1/624f2baec6d73727b616515f/1649419131305-SNAZE8T9R8I4F0UCXW1N/8.jpg UPI LLC https://images.squarespace-cdn.com/content/v1/624f2baec6d73727b616515f/1649420500987-D9CP1A7F9DW2VYFRWYNC/Swan.jpg UPI LLC https://images.squarespace-cdn.com/content/v1/624f2baec6d73727b616515f/1649421058095-J40KE5UFKJ56VV3SZW1P/DOT.jpg UPI LLC https://images.squarespace-cdn.com/content/v1/624f2baec6d73727b616515f/1649421214934-GI2SLWEVUJ5DF7Q1EQ6I/Aero.jpg UPI LLC https://images.squarespace-cdn.com/content/v1/624f2baec6d73727b616515f/1649421234171-2ALL91EA9B7XFTE55NCQ/5.jpg UPI LLC https://images.squarespace-cdn.com/content/v1/624f2baec6d73727b616515f/1649421575756-VG6XNT8HK4PVO4RLD00N/03-27-2022+%2813%29.jpg UPI LLC https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1618497259178-6XJGK9GR6YAVBQL5L519/20140301_Trade-151_012-2.jpg UPI LLC https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1607694583486-2PQT0LQ193RL7MCB6DX4/20140228_Trade+151_0046.jpg UPI LLC https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1607694644871-IC85FNH781UNZSZEGHDR/Aro+Ha_0428.jpg UPI LLC https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1618497259178-6XJGK9GR6YAVBQL5L519/20140301_Trade-151_012-2.jpg UPI LLC https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1607694583486-2PQT0LQ193RL7MCB6DX4/20140228_Trade+151_0046.jpg UPI LLC https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1607694644871-IC85FNH781UNZSZEGHDR/Aro+Ha_0428.jpg UPI LLC https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1607628784608-5D22G9GPLHDSAB2IXC2G/Large+JPG-Aro+Ha_0638.jpg UPI LLC https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847743861-GWVMBPD7Z7WQRQL9IZZ8/Large+JPG-Aro+Ha_0380.jpg UPI LLC https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1618499940057-NOSVTAF5RUJ93L845Q7V/20140301_Trade%2B151_0124-Cropped.jpg UPI LLC https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1618502539595-SQVFPHXO9PZ30YYYQ1LK/Large%2BJPG-20140228_Trade%2B151_0046.jpg UPI LLC https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847758762-K3GBXS5IJOG1B9FHF8T2/Large%2BJPG-Aro%2BHa_0428.jpg UPI LLC https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847767761-J2M1HI20BXRQ9XCR0HUD/Large+JPG-Aro+Ha_0387.jpg UPI LLC https://images.squarespace-cdn.com/content/v1/624f2baec6d73727b616515f/aebb8400-56b4-422c-9c56-fa000aa1cd02/Photo+Aug+19%2C+8+37+24+AM.jpg UPI LLC https://images.squarespace-cdn.com/content/v1/624f2baec6d73727b616515f/46ce2560-f978-4afa-9371-019845bf31bb/Photo+Jan+23+2025%2C+11+06+36+AM.jpg UPI LLC https://images.squarespace-cdn.com/content/v1/624f2baec6d73727b616515f/872018ad-b95b-4d84-8b74-2918a4bf010a/Photo+Mar+20+2026%2C+2+50+13+PM+%281%29.jpg UPI LLC https://images.squarespace-cdn.com/content/v1/624f2baec6d73727b616515f/fa828d0a-417b-4553-ba1d-c21c757abebc/WUCA.png UPI LLC Wisconsin Underground Contractor Association https://images.squarespace-cdn.com/content/v1/624f2baec6d73727b616515f/214a9dc5-fcb6-418c-b958-62745844761b/Operators.png UPI LLC - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/624f2baec6d73727b616515f/32404bf2-af40-44f7-8d0a-4d1ecd3815c0/AICCW.jpg UPI LLC American Indian Chambers of Commerce https://images.squarespace-cdn.com/content/v1/624f2baec6d73727b616515f/6088166c-fdc0-42a8-ab81-45ceb4e4586e/NFIB.png UPI LLC - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/624f2baec6d73727b616515f/49613731-ff5d-4324-a682-266f55a80af0/Liuna-Logo.png UPI LLC Laborer Local 113 https://upiunderground.com/applications daily 0.75 2026-03-26 https://upiunderground.com/new-page daily 0.75 2026-03-26 https://upiunderground.com/about-upi daily 0.75 2026-03-26 https://images.squarespace-cdn.com/content/v1/624f2baec6d73727b616515f/8a3fb625-5db6-4397-9e7a-c0489bdf1a5e/GPA.jpg About - Our Ancestry UPI was originally founded back in the late 1960s as Leo Dretzka Construction building pools. Eventually Leo Dretzka Construction grew to Underground Pipeline Inc. As Underground Pipeline Inc grew so did the leadership, under Leo and his sons; Norb Sr, Jeff SR, and Craig. https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847762019-6FVSEHEZWIGMCJ5QASPI/image-asset.jpeg About - Our Ancestry With the three brothers at the helm in the 90s, Underground Pipeline Inc grew in size and capability. By the early 2000s Underground Pipeline Inc employed over 20 people and grew to working on large municipal projects and new residential developments to support the growing Wisconsin economy. Into the late 2000s Underground Pipeline continued to earn it’s great reputation among the community and it’s clients. https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847760973-X5KYS9GW8IKNKKBI4PH1/image-asset.jpeg About - Our Ancestry In 2011 Underground Pipeline Inc was restarted as UPI LLC, with Craig, Norb Jr, and Mike leading the charge. Since, UPI has grown yet again employing more of Wisconsin’s best laborers and operators. https://upiunderground.com/safety daily 0.75 2026-03-26 https://upiunderground.com/developers daily 0.75 2022-05-04 https://images.squarespace-cdn.com/content/v1/624f2baec6d73727b616515f/1c258f54-edf5-43ff-b2fe-daa053221247/4-24-22+%286%29.jpg Developers - Developers Developing a new commercial building, subdivision, multi-family or apartment complex? UPI can provide new utilities to those buildings as well as drainage solutions to best fit the site’s needs. UPI can aid in the permitting process, project management. We can see projects through from the beginning budgetary stages all the way till the last subcontractor finishes their work. https://upiunderground.com/architects-engineers daily 0.75 2022-05-04 https://images.squarespace-cdn.com/content/v1/624f2baec6d73727b616515f/0044eef5-6767-4d4b-a197-93a1d082e071/LC+PLAN.jpg Architects & Engineers https://upiunderground.com/municipalities daily 0.75 2022-05-05 https://images.squarespace-cdn.com/content/v1/624f2baec6d73727b616515f/8fdfc38e-edcb-4c05-8467-a4cd8fb75b6f/3.jpg Municipalities - Municipalities UPI can provide not only work for contracted and publicly bid projects but emergency repairs as well. From water main breaks to storm sewer repairs, UPI can be ready to help municipalities in a pinch. https://upiunderground.com/general-contractors daily 0.75 2024-02-29 https://images.squarespace-cdn.com/content/v1/624f2baec6d73727b616515f/fb28ddb5-f131-4a43-a2e1-2a91a9155281/1.jpg General Contractors - General Contractors With a large variety of services, UPI is well fit to many projects. From replacing services to existing building, to aiding in a complete renovation of a building. UPI can provide new utilities to any project in need.