Bunney’s Inc. inspects, repairs, and upgrades spillways for dams, detention basins, reservoirs, and stormwater facilities across Arizona. We combine field-tested construction methods with careful hydraulic review to restore capacity, control scour, and extend service life—while keeping your site compliant and safe.
New to Bunney’s? See About Bunney’s, our Capabilities, and featured Projects
Why owners choose Bunney’s
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Arizona-ready expertise – Designs tuned for monsoon peaks, desert soils, and high-velocity flows.
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Integrated delivery – Earthwork, concrete, armoring, and access in one scope; see Concrete Flatwork.
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Compliance & safety – SWPPP-aligned BMPs, robust QA/QC, and documented inspections. View our Safety program.
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Lifecycle focus – Condition assessment, repair, and maintenance paired with Erosion Control and Rain Spillways.
Spillway repair services
Assessment & Planning
Condition surveys (concrete distress, cavitation, joint failure), hydraulic checks, and constructability planning with the AHJ.
Structural Rehabilitation
Crack injection, concrete removal/replacement, joint reseal, headwall/wingwall repairs, anchor dowels, and rebar remediation.
Energy Dissipation & Scour Control
Stilling basin repairs, baffle blocks, riprap and articulated concrete block (ACB) systems, cutoff walls, and apron reconstruction.
Channel & Outlet Upgrades
Regrading transitions, replacing or upsizing culverts, Trench Backfilling, and outlet works optimization.
Sediment & Debris Management
Debris racks, access improvements, and routine cleanouts coordinated with Dust Control and erosion BMPs.
Investigation & Utility Support
Utility locates and daylighting using Hydro/Vacuum Excavation and Potholing Services to avoid strikes.
How we work
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Plan – Review design criteria and past performance; confirm permits and sequencing.
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Stabilize – Dewatering/bypass as needed; temporary erosion protection; safe access.
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Rebuild – Structural repairs, energy dissipation upgrades, and channel/outlet improvements.
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Stabilize long term – Final armoring, grading, and vegetative/structural BMPs.
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Verify & close out – Density and material tests, punch list, as-builts, and O&M guidance.
Arizona-specific considerations
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Monsoon readiness – Right-size low-flow and emergency spillways; reinforce transitions and corners where velocities spike.
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Desert soils – Moisture conditioning and lift-by-lift compaction for caliche/hardpan or collapsible soils.
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Sediment management – Access for periodic cleanouts to preserve capacity and minimize downstream sediment loads.
FAQs
Can you repair while keeping flow paths available?
Yes. We phase work, set up bypass/dewatering plans, and coordinate MOT/traffic where needed.
What if the stilling basin is undermined?
We reconstruct the apron or basin, add cutoff walls, and install riprap/ACB to stop headcutting and future scour.
Do you provide documentation for inspections?
We deliver test results, photo logs, and as-builts, aligned with AHJ expectations and SWPPP requirements.
How do you reduce future maintenance costs?
We harden high-energy zones, improve energy dissipation, refine grading, and create safe access for routine cleanouts.
Other excavation services: utility trenches, berm work, spillway repairs, rain spillways, dust control, vacuum excavation, erosion control, duct bank, conduit excavation, hydro excavation, trench backfilling.
