Back in September 2022, I was sitting in my office, staring at a site plan and feeling pretty confident. We'd landed a mid-size commercial project—a five-story office expansion—and I was finalizing the equipment order. The spec sheet in front of me listed a Potain MDLT 1109 tower crane. I'd used the MDLT 1109 before on a tight urban site. I knew it was compact. I knew it could handle the load. I checked the box, processed the order, and moved on.
From the outside, it looks like picking a crane is just matching load charts to lift requirements. The reality is you're also gambling on site access, delivery logistics, and what happens when the street is closed for a parade you didn't know about.
Two weeks later, the truck showed up with the wrong crane.
The Setup: How I Got It Wrong
The MDLT 1109 is a luffing jib crane. That's its selling point: the jib can angle up and down, which makes it great for sites where you can't swing a fixed boom over neighboring buildings. People assume luffing jib cranes are always the best choice for tight urban sites. What they don't see is the setup complexity—the counter-jib length, the ballast requirements, the fact that sometimes a smaller flat-top is actually the smarter play.
The client's site was on a narrow lot between two existing structures. My plan was sound: bring in the MDLT 1109 on a flatbed, assemble it on-site, and have it lifting by end of week. The problem? I'd read the site plan wrong. The access alley was 15 feet wide, not 18. The MDLT 1109's longest component section is just over 18 feet. It wouldn't fit. Full stop.
If I remember correctly, the total order value was about $3,200 for the rental and delivery. At the time, that seemed reasonable. I'd reserved the MDLT 1109 for a 6-week rental period. When the truck couldn't get past the alley, we had to send it back. That cost $890 in redo fees—rebooking the truck, the driver's waiting time, and the wasted day.
The project had already been delayed by a week because of material shortages. Now we were looking at another three days minimum.
The Rescue: Switching to the Potain MCT 85
The site supervisor called me at 4:00 PM. I could hear the stress in his voice. "The crane won't fit. What's the backup?"
I didn't have a backup. That was my first mistake.
Looking back, I should have ordered a Potain MCT 85 flat-top from the start. At the time, I was so focused on the luffing jib advantage that I ignored the logistics. The MCT 85 has a maximum component width of about 12 feet. It fits through that 15-foot alley with room to spare. Its maximum jib length is 164 feet, compared to the MDLT 1109's 190 feet. But for a five-story building? Plenty of reach.
Here's the thing: the MDLT 1109 is a beautiful machine. I'm not knocking it. But for that specific site—narrow access, moderate loads, standard urban constraints—the MCT 85 was the right tool. It's also considerably lighter on the outrigger loads, which mattered because the street asphalt wasn't as thick as we'd assumed.
We re-ordered the MCT 85. It arrived two days later. It fit. We were lifting by Thursday.
Three Things I Now Check Before Any Crane Order
After that $890 mistake (plus the embarrassment of telling my boss I'd misread the site plan), I created a pre-order checklist. It's saved us from at least four similar errors since. (Should mention: we're a medium-sized construction firm in the Midwest, not a national GC. These lessons may not scale to huge projects, but they've worked for our size.)
1. Verify Site Access Width—With a Tape Measure
Site plans lie. Or they get updated without you knowing. Or the city decided to resurface the road and added a temporary light pole that narrows the lane by four feet.
Now I have one of our guys physically measure the narrowest point the crane components need to pass. I want a number, not a "looks fine." For the Potain MDLT 1109, the longest component is its base section or jib section, around 18-20 feet depending on configuration. Check it against the actual access route.
Quick reference (based on Potain specs I verified with our dealer):
- MDLT 1109 (luffing jib): Longest transport piece ~18-19 feet. Needs wide access or disassembly.
- MCT 85 (flat-top): Longest transport piece ~12-13 feet. Fits standard urban alleys.
- MR 415 (luffing jib): Longest transport piece ~22 feet. Definitely requires planning.
2. Check Outrigger and Ballast Requirements
Most buyers focus on jib length and lift capacity and completely miss the ground preparation costs. The MDLT 1109 requires a concrete ballast block. The MCT 85 uses a slewing platform with adjustable ballast. On that job, we had to bring in an extra concrete truck for the MDLT's ballast—another $450 I hadn't budgeted. The MCT 85's adjustable ballast meant we avoided that cost entirely.
3. Ask "What's the Next Best Option?" Before You Order
I now prepare a Plan B for every crane rental. The question everyone asks is "what's the best crane for this job?" The question they should ask is "what's the best crane for this job, given our access constraints?"
I keep a shortlist of Potain models that are likely to work:
- Potain MDLT 1109 — Best for tight urban sites with wide access and complex jib path constraints
- Potain MCT 85 — Best for standard urban sites with moderate access width
- Potain MR 415 — For heavy lifts where luffing jib reach matters
- Potain MDT 389 — A topless luffing jib for even tighter headroom
The Real Lesson: It's Not Just the Crane, It's the Context
Here's the part I didn't expect: after the switch, the client actually noticed. Not the crane model—they didn't care about that. They noticed that the timeline got sorted quickly. Our project manager had to explain the delay, but once we had the MCT 85 on-site and working, the client's confidence came back. When I switched from a luffing jib to a flat-top on that project, the client's perception of our competence actually improved—because we identified the error early and fixed it fast.
I'm a crane buyer. I've been handling equipment orders for six years now. I've personally made (and documented) around 15 significant mistakes, totaling roughly $12,000 in wasted budget from delivery fees, rebookings, and wrong specifications. Now I maintain our team's pre-order checklist to prevent others from repeating my errors.
If I could redo that 2022 decision, I'd order the MCT 85 from the start. But given what I knew then—focused on jib type and load charts, not access width—my choice was reasonable. The lesson wasn't about knowing the crane specs cold. It was about knowing the site cold, too.
One last thing: the Potain brand didn't let us down. The equipment performed exactly as expected. The mistake was mine, and mine alone. And the right Potain crane—even if it was the second one—got the job done.
