What causes a noise on my l. front like a bearing or road noise

Sounds like the hub/bearing is going out. Aprox $400.00

Does the noise increase when you veer to the right or left at about 35-40mph? If it does, the problem is likely to be the wheel bearing on the opposite side of the direction you are turning. to replace the bearing, including the tax is $400.18 as long as the wheel hub has not been damaged. The additional cost of the hub is $97.64 + tax. I highly recommend having this checked out right away, wheel bearings can get much worse quickly.