M.R.
N.,
Dental insurance is pretty frustrating. I'm a hygienist and see it frequently. Usually it's the employer who has chosen a lesser plan. You could talk to your HR department and see if there is a higher plan, but more than likely not. You might talk to the dentist to see if you can have the tooth extracted. Get an interim partial, (someone else referred to it as a flipper, a small fake tooth that clasps on) until you can save up the money for an implant. The other advantage would be, you could use your benefits this year to have the tooth extracted, pay for the partial, and possibly any bone grafting done, and then see about doing the rest after the first of the year when your benefits would start over. if the tooth isn't infected, see if you could wait for extraction until end of December, and then come back in Jan. for the rest. Also, a lot of offices do financing. Be careful though. Some charge outrageous fees.
I tend to lean towards implants even though there is a very slight risk of failure. But a bridge damages two perfectly good teeth and leaves you open to decay around crowns, and cleaning issues down the road. Depending on how old you are, you will more than likely have to have it replaced a few times. Now with that being said, I have seen people who have had bridges for 30 or 40 years and kept them really clean with no problems, but I've also seen people lose the support teeth because of decay and periodontal disease.
Personally, if I were going to spend that amount of money, I would want to see a specialist such as a periodontist or an oral surgeon. A lot of general dentists do implants and probably do a good job, but I want someone who has the most experience. Good luck. Sorry for the challenge you have right now.