Sewer lateral replacement in Old Town alley
Root-intruded clay-tile lateral — static burst from alley pit to main, alley surface preserved.
Longmont, CO · Boulder County
Tunneling / TBM in Longmont, CO
Pipe bursting in Longmont for sewer and water lateral replacement in Old Town alleys and 1970s–90s subdivision driveways — no open trench through mature street trees.
Tunneling / TBM in Longmont, Colorado
Pipe bursting in Longmont restores sewer and water laterals in Old Town, Prospect, and SW Longmont without disturbing mature alley corridors and concrete driveways. Static bursting frags host pipe and pulls HDPE replacement through Boulder County clay — one entry and one exit pit replace a continuous trench through landscaping that took decades to establish.
Longmont's clay-tile and HDPE sewer stock from 1970s–90s subdivision builds carries root intrusion and offset joint failures confirmed by CCTV. Bursting handles these in-place rather than full pavement removal.
LPC underground lines in Old Town alleys require locate clearance before burst pits open — coordination step beyond standard 811.
Longmont projects
Local Tunneling / TBM Scenarios
Real Boulder County angles — not generic statewide copy.
Water service under Prospect driveway
Corroded service under concrete driveway — burst in-place with HDPE replacement, concrete stays.
Sewer main renewal in 1980s subdivision
Camera-confirmed offset joints — burst through clay host with HDPE replacement.
LPC alley burst with utility clearance
LPC distribution nearby — locate and clearance confirmed before expander enters pipe.
How Tunneling / TBM Works in Longmont
Longmont burst crews CCTV-confirm host condition, coordinate LPC locate clearance, and pull 811-cleared locates before expander enters pipe. Boulder County clay provides predictable bursting friction. Post-burst CCTV confirms pipe seat.
Soil & Geology — Boulder County
Boulder County clay, St. Vrain Creek alluvium, and sandy loam on east-side agricultural-edge grids.
Longmont bores hit clay in Old Town and central grids, St. Vrain alluvium near the creek, and sandy loam on east subdivision edges. Municipal electric along many corridors requires extra pothole discipline.
Weather & Scheduling
Northern Front Range hail and spring St. Vrain runoff push Longmont crews to plan mud programs and pit shoring for creek-adjacent alignments.
Spring St. Vrain runoff raises groundwater on creek-adjacent jobs. Summer hail affects exposed east-side pads. Winter freeze-thaw on clay affects pit shoring on Old Town shots.
811 Locates & Permits in Longmont
City of Longmont Public Works, Boulder County ROW, CDOT US-287 relocations, St. Vrain floodplain on east alignments.
City of Longmont Public Works and LPC handle permits; Boulder County ROW on edges. CDOT US-287 controls state bores. St. Vrain floodplain work may need additional review. LPC coordination is required before boring near distribution lines.
Trenchless vs Open-Cut Here
Open-cut through Longmont Old Town alley corridors and mature landscaping adds restoration that rivals utility cost — bursting trades that for two pits.
Diameter, length, shaft depth, groundwater handling, disposal, guidance, and municipal inspection milestones.
How we work
Our Process for Longmont Tunneling / TBM
Scope & Site Walk
You share plans or describe the problem; we confirm alignment, depth, access, and which trenchless method fits Colorado soils.
811 Ticket & Marks
Colorado 811 ticket filed; wait period before pits open unless your permit path differs. We pothole where marks conflict.
Profile & Permits
Bore plan, CDOT or city ROW permits, railroad agreements, and crossing engineering when the path leaves private property.
Rig Mobilization
Compact spread for tight Boulder lots; larger HDD for I-25 or I-70 relocations — matched to length and diameter.
Pilot & Ream
Steered pilot on design line, ream passes sized for your pipe or casing, fluid program tuned for clay or sandstone.
Pullback & Install
HDPE fusion, steel casing, or multi-duct bundle pulled with tension and bend-radius monitoring.
Test & As-Built
Pressure test, mandrel, or survey records for owners, inspectors, and operators as spec requires.
Restore & Closeout
Compact pits, replace sod or hardscape per scope, leave 811 ticket and locate map in your project file.
FAQ
Tunneling / TBM in Longmont — FAQ
How much does pipe bursting cost in Longmont?
Host diameter, footage, soil, pit access, and restoration — call with address and camera report.
LPC coordination before burst in Old Town alley?
Yes — LPC locate and clearance before pit opening.
Can you burst clay-tile sewer in Longmont?
Yes — static burst works through clay tile when joints are not severely offset.
Do you handle CCTV before bursting?
Yes — we confirm host condition before quoting burst feasibility.
Do you serve Berthoud for pipe bursting?
Yes — Boulder/Larimer County border mobilization.
Directional Boring Colorado
Free Tunneling / TBM Quote in Longmont
24/7 — Emergency dispatch statewide. Tell us entry, exit, pipe size, and county — a bore specialist calls back with cost drivers, not a flat rate.
- Free alignment review
- Colorado 811 on every job
- Licensed spreads statewide
- 24/7 emergency line
Scope your alignment
Send bore path details
Step 1 of 2 — path, pipe, and city first