Actually there is a cool app “TollGuru” that can tell you toll cost for all possible routes in United States. It calculates cheapest, fastest and other route options based on total cost (gas and toll cost) and time of your drive based on current traffic. And best part is that you can customize it for your vehicle. It covers all toll roads and bridges in United States.
If you know your route, you could use Tollsmart.com (paywall, $2 minimum) or their free mobile app:
Sample:
CALIFORNIA
17-Mile Drive Toll: $9.25 Location: Scenic drive through Pebble
Beach, CA Operator: Pebble Beach CorporationGolden Gate Bridge Toll: $6.00 (Southbound ONLY) Location: Spans
San Francisco Bay connecting San Francisco to Marin County, CA
Operator: Golden Gate Bridge, Highway & Transportation DistrictRiverside Freeway (SR-91) Toll: Variable Location: An east-west
freeway in Southern California linking Orange and Riverside counties
Operator: Orange County Transportation Authority (OCTA)Eastern Transportation Corridor Toll: $3.50 (East Branch) $3.25
(West Branch) Location: Orange County, CA Operator: Foothill/Eastern
Transportation Corridor AgencySouth Bay Expressway Toll: Variable Location: Beginning at Otay
Mesa, provides access to/from Mexico and across San Diego Operator:
South Bay Expressway, L.P.The Antioch Bridge Toll: $5.00 (Northbound ONLY) Location: Spans
the San Joaquin River linking Antioch, CA with Sacramento County, CA
Operator: Bay Area Toll Authority Metropolitan Transportation
CommissionThe Benicia-Martinez Bridge Toll: $5.00 (Northbound ONLY) Location:
Spans the Carquinez Strait linking Benicia, CA to Martinez, CA
Operator: Bay Area Toll Authority Metropolitan Transportation
Commission
you get the idea.
Credit:stackoverflow.com‘