Navigating the Bay Area transit network means dealing with frequent bridge tolls, and the San Mateo-Hayward Bridge is one of the busiest crossings on the peninsula. If you're planning a trip across the bay between the East Bay and Foster City, knowing the exact fee structure helps you avoid unexpected bills in the mail. The standard two-axle toll for passenger vehicles, SUVs, and motorcycles is $8.50, regardless of whether you use an electronic transponder or a license plate account.
Unlike older cash-heavy plazas, the San Mateo Bridge uses an all-electronic toll collection system. There are no toll booths to stop at, so your vehicle keeps moving at highway speeds while overhead sensors capture your transponder or license plate. Understanding how these rates scale by vehicle size, how to leverage carpool discounts, and how to settle invoices prevents costly administrative fees down the road.
Current San Mateo Bridge Toll Prices
The Bay Area Toll Authority sets pricing based on vehicle classification and the number of axles touching the pavement. If you're towing a trailer or driving a commercial vehicle, your costs increase significantly.
- 2-Axle Vehicles (Cars, SUVs, Motorcycles, Pickups): $8.50 flat rate.
- 3-Axle Vehicles (Cars with trailers, small trucks): $19.50.
- 4-Axle Vehicles: $25.00.
- 5-Axle Vehicles: $30.50.
- 6-Axle Vehicles: $36.00.
- 7+ Axle Vehicles: $41.50.
Keep in mind that these rates apply across all directions of travel on the bridge. Because tolls are collected electronically, you won't encounter manual cash lanes. If you don't have an active pass, cameras photograph your plates, and an invoice goes to the registered owner.
Accepted Payment Methods
You have several ways to pay your toll, but choosing the right method determines whether you face extra administrative costs.
FasTrak Transponders
Using a standard FasTrak transponder mounted on your windshield is the cleanest way to manage travel. As you pass the overhead gantries, the system deducts funds automatically from your prepaid balance. You don't receive paper bills, and your account links directly to your credit card or bank account for automatic reloading.
License Plate Accounts
If you don't want a physical transponder stuck to your glass, you can set up a license plate account. The system photographs your plates and bills your account directly. This option matches the standard $8.50 rate for two-axle vehicles, making it a convenient choice for occasional drivers or rental car users who prefer not to manage hardware.
Toll Invoices
If you cross without any prior account setup, the agency mails a toll invoice to the vehicle's registered address. You typically have 21 days to pay this invoice online or by phone. Failing to pay within the deadline triggers heavy late penalties and administrative fees that quickly multiply the original $8.50 cost.
Cost-Saving Strategies and Carpool Rules
Commuting daily across the bay gets expensive, but you can slash your travel expenses by utilizing official carpool incentives and proper toll configuration.
Carpool and FasTrak Flex Discounts
If you share your ride, you can qualify for discounted crossings during designated commute hours. For state-owned bridges like the San Mateo-Hayward Bridge, vehicles with three or more occupants (or qualifying two-seater vehicles and motorcycles) can use the designated carpool lane and receive a 50% discount—dropping the price to $4.25.
To get this discount, you must use a FasTrak Flex transponder with the switch toggled to the correct number of occupants (set to "3+"). Standard transponders or unadjusted switches will charge the full vehicle rate even if you have a full car. Carpool hours run Monday through Friday from 5:00 AM to 10:00 AM. Outside these hours, carpool lanes open to all traffic and charge the standard rate. Note that two-person carpools can use the designated carpool lanes during commute windows with a Flex tag set to "2", but they pay the regular $8.50 toll without a discount.
Choosing Alternative Routes
If you want to bypass the toll entirely, your options are limited because the bridge spans open water. The alternative requires driving around the southern tip of the bay through San Jose via State Route 84 and Highway 101 or Interstate 880. However, the extra mileage, heavy south bay traffic, and wasted fuel usually outweigh the $8.50 bridge toll, making the direct crossing the more economical choice for most commuters.
Frequently Asked Questions
Can I still pay cash on the San Mateo Bridge?
No. The San Mateo-Hayward Bridge transitioned to all-electronic tolling. There are no physical cash collection booths or personnel stationed on the bridge to take paper money.
What happens if I drive a rental car across the bridge?
Rental agencies often charge daily management fees or high processing surcharges if toll bills pass through them. To avoid these extra costs, check if your rental car allows you to bring your own portable FasTrak transponder, or sign up for a temporary license plate account directly through the Bay Area FasTrak website for the duration of your rental.
How long does it take for a toll invoice to arrive in the mail?
Toll invoices typically arrive within 21 days of your crossing date. If you suspect you crossed without a transponder, it's wise to check the online payment portal manually using your license plate number after a few days rather than waiting for the paper bill to avoid missing deadlines.
Do motorcycles pay a lower toll rate?
Motorcycles are classified as two-axle vehicles, but when using a FasTrak Flex tag set correctly, they often qualify for carpool lane usage and specific promotional rates depending on current regional transit rules. Check your specific transponder profile configuration to ensure proper classification.
