HAWAII WORKS INC.

Drainage work on Kam Hwy — and it didn't go exactly as planned 😅

We opened up the road to repair a cracked RCP and found an additional crack hiding underneath. Adjusted the shoring plan, brought in longer shore jacks, and made sure everything was safe before moving forward. Lane closed, work done, road back open.
That's the job — adapt and keep it moving.

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Progress on Kam Hwy 🛠️

Sawcut the asphalt, excavated down, and pulled out the broken RCP segment for replacement. The crew also fab'd a custom steel plate span support on site to keep things moving safely. Lane closed at 8:30, road back open by 1:30 — keeping disruption to a minimum on a busy corridor.

Old infrastructure comes with surprises. We work carefully, communicate with the engineer, and do it right.

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Not every job is just dirt and concrete — sometimes you're working inches away from a live water line on a active highway.

Potholing on the mauka lane at Kamehameha Hwy, Laie side, to safely expose a water line connection point. Board of Water Supply on site, GP Traffic Control keeping things moving — because when you're digging near critical infrastructure, you don't cut corners on coordination.

Busy road. Tight space. Right team.

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Not every part of construction is glamorous — but it matters. Before backfilling could begin, bio socks were patched, and every weep hole was hand-dug to confirm nothing got sealed shut during the CLSM pour. One blocked drain behind a wall can quietly cause thousands of dollars in damage down the road.

A broken PVC line turned up in the process — capped on the spot before it became someone else's problem later. Then came the backfill, compacted lift by lift with a sheep's foot roller until the ground was solid enough to trust.

This is the part of the job that never makes it into the final photos. But it's exactly what makes the final product last.

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Progress behind the canal wall. Strip drains are set and connected directly to the weep holes, creating a continuous drainage path that keeps water moving and pressure off the wall.

First lift of CLSM poured and complete — controlled low-strength material fills voids and stabilizes the backfill without overloading the structure. BMPs also back in order as work continues on site.

Every layer done right before moving to the next.

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Prepping the mauka side lane on Kamehameha Hwy — setting the foundation before the RCP goes in.

Our crew dewaterd the trench and got the 3B burrito wrap installed in the mauka lane, keeping everything properly drained and protected. RCP isn't in yet, but the groundwork is ready to go. Wrapped up with a full site cleanup before calling it a day.

Every phase has to be done right before the next one can begin.

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Detail work behind the canal wall. Cleared mud from the top of the footing and opened up the weep holes by hand from the backside — all to prep the wall for the next phase.
With drainage clear, the team was able to tie in the drainage mat, apply waterproofing, and patch the tieback holes. Every one of these steps protects the wall from water intrusion and keeps the structure solid for the long run.

The work you don't see is what makes the difference.

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Forms stripped on both sides of the tie-in — and the work doesn't stop there. Debris cleared from behind the canal wall, surface prepped and ready for CLSM backfill.
Waterproofing and patching applied on the church side of the wall, sealing the surface before material goes back in. Proper waterproofing at this stage is what protects the structure long after the job is done.

Clean site. Solid finish.
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Coordination day on the mauka inlet side at Kamehameha Hwy.

We brought in GPRS to scan the inlet wall and locate rebar — making sure we're clear before guard rail and hand rail go in. The state inspector was also on site to oversee compaction testing where the road had collapsed. Dirt was loaded out and the mauka side got a full cleanup to keep the site tight.

When the work requires precision, you bring in the right people and do it right.

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Canal wall work in progress. Mixed and poured at the junction where the old wall meets the new — one of the most critical connections on any wall repair or extension. Getting that seam right is what ties the whole structure together.

Excavated behind the wall to expose the weep hole pipe and confirm drainage is clear. Weep holes relieve hydrostatic pressure from behind the wall — keep them clear or the wall pays for it later.

Pour, drainage, protection. All in a day's work.

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