the heaviest passenger vehicles on the road, all too heavy to cross a 3 ton bridge

1. Chevrolet Silverado 2500HD 4x4 Crew Cab High Country: 7,552 lbs

2. Ram 2500 Power Wagon Laramie 4x4: 7,324 lbs
3. Nissan Titan XD Crew Cab S 4x2: 6,709 lbs
4. Ford F-250 Super Duty Super Cab SWB 4x2: 6,230 lbs
5. Lincoln Navigator L 4x4: 6,069 lbs
6. Cadillac Escalade ESV 4WD: 6,040 lbs
7. Lexus LX 570: 6,000 lbs
8. Toyota Sequoia Platinum 4x4: 6,000 lbs
9. Rolls-Royce Phantom Drophead Coupe: 5,995 lbs
10. Land Rover LR4: 5,941 lbs
11. Bentley Mulsanne Speed: 5,919 lbs
12. Porsche Cayenne S E-Hybrid: 5,809 lbs

If you're doing the math, and thinking... well those aren't 3 tons with the last 4... now add the adult human and a tank of gas, and bingo! Over 6 thousand pounds/3 tons.

http://www.thedrive.com/new-cars/1720/8-cars-that-legally-cant-cross-the-brooklyn-bridge
http://www.barking-moonbat.com/index.php/weblog/comments-editor/17893/
http://swpare.blogspot.com/2014_10_01_archive.html