We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What is a Table Bridge?

Mary McMahon
Updated May 21, 2024
Our promise to you
All The Science is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At All The Science, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject-matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

A table bridge is a type of movable bridge which operates by raising part of the bridge bed vertically. Like other movable bridges, table bridges are used to accommodate the need to balance ship and vehicle traffic. When the bridge is down, cars can drive over it, and when it is elevated, ships can pass under it. In communities such as ports and areas with numerous waterways, table bridges and other movable bridges can be quite common.

The operation of a table bridge is relatively straight forward. When the bridge is down, it looks like a conventional bridge, and can be designed with a variety of aesthetic schemes. When the bridge needs to be raised, hydraulic pillars underneath the bridge push it up, and then lock in place to hold the bridge up. During this phase, cars cannot pass over the bridge, and barriers may be dropped on the road so that cars do not inadvertently drive into the waterway.

Once a ship has successfully moved under the table bridge, the bridge can be lowered again, the barriers can be raised, and cars can cross it as usual. The apparatus for moving the bridge is hidden, so the bridge presents a low profile, which may be important for aesthetic reasons in some communities. Some people do not like bridges with overhanging equipment used to move the bridge, and may prefer table bridges for this reason.

Movable bridges do present a safety issue for cars, as inattentive drivers could drive onto the strip of the bridge left in place while the bridge is up, and not realize that they are about to drive off the road and into a waterway. For this reason, access to the bridge may be controlled with lights which can be used to signal traffic, and traffic on the table bridge can be further controlled with movable barriers which are used as a safety measure when the bridge cannot be crossed by car.

Before a table bridge is raised, it is typical for alarms to illuminate and sound to alert people in the area to the fact that the bridge is moving. Drivers are generally expected to stop, and pedestrians must do so as well. In some regions, truckers may be required to stop at a movable bridge to confirm that it is safe to cross before moving on, much as trucks stop at railroad tracks to verify that no train is coming.

All The Science is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Mary McMahon
By Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a All The Science researcher and writer. Mary has a liberal arts degree from Goddard College and spends her free time reading, cooking, and exploring the great outdoors.

Discussion Comments
Mary McMahon
Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a...

Learn more
All The Science, in your inbox

Our latest articles, guides, and more, delivered daily.

All The Science, in your inbox

Our latest articles, guides, and more, delivered daily.