WHAT IS AN AIR GAP BRIDGE?
What Is an Air Gap Bridge?
When people hear “temporary bridge,” they usually picture one thing: a crossing over water, a ditch, or wet ground that equipment can’t drive through. That’s a fair assumption. It’s the most common use case. But there’s a second application that solves a very different problem, and it comes up more often than most contractors expect.
It goes by a few names, including air gap bridge, clear span temporary bridge, or utility protection bridge, and the job is the same in every case: create a gap between heavy equipment above and something fragile, valuable, or hazardous below. No contact. No load transfer. Just a clean span holding everything above ground level.
Why an air gap matters?
The term comes from exactly what it sounds like: an actual gap of air between the
WHAT SORT OF PERMITS MAY BE REQUIRED TO INSTALL TEMPORARY, PORTABLE, HEAVY DUTY VEHICULAR BRIDGES?
Building Permits for the delivery and installation of an industrial, temporary vehicular bridge can be the simplest thing or a giant headache. First thing to be aware of: do NOT just ask your neighbor what they did to install their equipment bridge 10 years ago. Building and civil engineering regulations change, and what was allowed then with a simple one-page permit may now be woefully inadequate for modern heavy construction standards.
Do not be tempted to just skip the whole process and think, “No one will notice if I’m installing a temporary construction bridge up in the back woods somewhere for a 1-month project.” I know this from personal experience. We had a project—it was a simple property upgrade—and the local inspector stopped by, looked me in the eye, and said, “You knew better than this.” We had to halt the industrial project site, engage an architect, and prepare
INDUSTRIAL TEMPORARY BRIDGES INSTALLATION – a checklist…
EQUIPMENT NEEDED
- Crane or boomlift: Remember it must be able to comfortably reach the center of the temporary bridge span while NOT sitting at the very edge of the ravine or creek. A crane + an industrial modular bridge = a very heavy load. You don’t want your equipment sliding down an embankment.
- A level or transit and string lines: To check for a smooth base.
- Proper PPE: Hard hat, steel-toe boots, leather gloves.
- Proper lifting equipment: Lifting chains, heavy-duty slings with clevis hooks, etc. Double-check the load ratings on all equipment before installing your portable bridge.
- A crew: At least 5–6 people, and more depending on the structural size of the project.
DELIVERY OF YOUR PORTABLE BRIDGE
- It sounds simple, but don’t forget to have a clear staging area for your portable bridges when they arrive on site. That flatbed truck isn’t going to sit there all day waiting for
SITE WORK: PREP BEFORE INSTALLATION OF TEMPORARY, PORTABLE, AND PRE FAB BRIDGES
Are you getting ready to install a bridge on your project site? Proper site preparation is the key to a safe and successful setup. Whether you are using temporary bridges for short-term access or setting up modular systems, here is everything you need to know before delivery day.
Regulatory and Ground Prep
- Check local regulations: Be sure to check for any building permits or local municipal inspections that may be needed. Don’t rely on what you hear from your neighbor or even a local contractor. Call your building department directly.
- Avoid soft terrain: No temporary bridges should ever be installed directly on soft, wet ground—such as wetlands, marshes, or visibly wet, soft soil. The structure will immediately sink when heavy loads are driven across.
- Ensure solid ground clearance: Temporary bridges should be installed on at LEAST 5 feet of solid ground on either side of an open span—and 6 to 8
Fast, Affordable, and Versatile Bridge Solutions for Projects That Need Reliable Access
When a project depends on safe, dependable access, delays are not just frustrating — they can affect schedules, budgets, equipment movement, and overall productivity. Whether crews need to cross a stream, span a trench, reach a remote work area, or maintain access during construction, the right bridge solution can make all the difference.
Spanweld Bridges provides portable, temporary, and modular bridge systems designed to help projects keep moving. Our bridges are built for fast deployment, dependable performance, and flexible use across a wide range of industries and site conditions. From construction and utility work to parks, government projects, residential development, agriculture, forestry, oil and gas, and private property access, Spanweld offers bridge solutions that can be matched to the needs of the job.
Built for a Wide Range of Applications
Every project site presents its own challenges. Some require temporary access for heavy equipment.
Get a Quote
Reliable access can make or break a construction timeline. Spanweld Bridges delivers durable solutions designed to keep your crews working and your project on track. Share a few details about your site, timeline, and load requirements, and our team will recommend the right bridge system for your application.
