These pictures accurately represent the state of the Toad Tunnel as of 1/16/2005 The entrance of the toad tunnel, starting at the post office parking lot. The Toad Tunnel leads to Toad Hollow (aka Core Area Pond), shown here.
The Toad Tunnel is a six-inch diameter pipe which runs under the Pole Line Road overpass that bridges I-80. Despite the name, this is also for frogs, not just toads. Its purpose was to allow these creatures to travel from the area where they lived to Core Area Pond (AKA Toad Hollow) at the other end.
Because of the building of the overpass, animal lovers including Julie Partansky worried about toads being smooshed by cars, because before the overpass, a colony of toads hopped from one side of a dirt lot (which the overpass replaced) to the reservoir at the other end. There was a lot of controversy, and the town decided, as part of the $7 million financing for the project, to allocate funds to build a toad tunnel beneath the Pole Line Road overpass. Wikipedia reports that the tunnel cost $14,000, while the book Northern California Curiosities reports $12,000. The book Weird California claims it was $30,000.
There are also several tunnels rather than just one. The shortest run is in the street opposite Sudwerk's parking lot (linking 2nd to Pole Line - a very very non-obvious route). It does, however, lack any sort of decoration, so it helps if you visit Toad Hollow to get an idea of what you're looking for. All the tunnels terminate at a fenced, protected wetland area with foreboding signs implying that if you climb over the fence, you will cause hundreds of species to die and make Gaia weep.
When the tunnel was built there was less development east of Pole Line Road, so the area that is now Families First was largely open and undeveloped. Therefore, the location was not chosen because the Post Office parking lot was the happening toad place to be.
Several years ago The Daily Show did a story about Davis' infamous toad tunnels. They put up a camera to observe whether toads used the tunnel. None did during the period it was recording. This, of course, does not prove that they never use it. You can watch the Daily Show segment here
There has even been a children's book written called Toads of Davis.
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Are toad tunnels really weird? There are plenty of tunnels to help wildlife cross the road in the UK - mostly for newts, but badgers, toads and hedgehogs are all catered for. Maybe they're just odd. The little housey thing is definitely odd. Why isn't it called "Toad Hall?" — Liam Creighton
I've heard that frogs/toads won't go through a tunnel if they can't see the end of it. Anyone know? —MichelleAccurso
If I were a frog, or a toad, I would expect any dark tunnel in the ground to have a snake at the bottom. No what they really needed was a Frog Overpass. Or possibly a Frog Mover conveyor. Or a transporter. Or, just improve the other side so they don't need to cross the road.—SteveDavison
Perhaps a good solution would be to have the toad tunnel to have a metal grating top as to allow light to shine down? Of course then, the frogs would have a heart attack every time a car drove over the grating —MatthewTom
"Hi, I'm a herpetologist (reptile/amphibian biologist), so perhaps I can answer some of these questions/concerns. Wildlife tunnels have been highly successful in other areas in preventing some roadkills. Not sure about this one. Frogs/toads don't need to see light at the end to use it - they often take refuge in dark burrows during cold and dry weather. It is unlikely, however, that a frog or toad would use an overpass - these are terrestrial animals, not arboreal, so they are much more likely to go down than up. And yes, snakes are also terrestrial, but that doesn't prevent frogs and toads from using other tunnels, burrows, etc. I doubt that metal grating would have an effect one way or another - cars passing overhead don't seem to deter them from crossing roads (unfortunately)." — MelissaAmarello
2011-07-15 10:36:41 The City of Davis did not pay a single dollar to build the tunnel, "The town decided to pay thousands of dollars to build the toad tunnel" is completly false. The town mandated that developers pay for the tunnel. The article should be changed to include this fact. Right now people are left with the impression that the City of Davis paid for the tunnel which is inaccurate. —AlexTickle
I've only seen sources that imply that the city put up the money. If you can supply a solid source that shows otherwise, then I agree, it should be changed. —ScottMeehleib
2013-07-29 08:04:18 "The Toad Tunnel is a six-inch diameter pipe" doesn't ring true. It's been many years since I've seen the tunnel, but my recollection is that it's much larger than that. Wikipedia has it at 18"x21", which sounds much more reasonable. —JimFrame
The toad tunnel entrance next to the post office is just a weird little pipe. I have never seen the other side. Perhaps it widens out at some point? —ScottMeehleib