You’re coasting home after a weekend in Rosarito Beach—still riding the high of vitamin D and Baja Med—and then comes a slap back into reality: brakelights and gridlock exhaust.
Small wonder, given that San Ysidro is the busiest land border crossing in the western hemisphere (fourth-busiest in the world). Otay Mesa’s no breeze either; it’s the busiest commercial port in California and second-busiest across the entire southern border. Smart Border Coalition says that each day last year, 41,800 vehicles crossed into the US at San Ysidro; 17,800 crossed at Otay Mesa, along with 1,023,000 commercial trucks.
Diana Pazos, a San Diego resident and adolescent psychiatrist working in Tijuana, says the northbound border wait at the San Ysidro crossing is often three to five hours Saturday through Monday—delays that modern humans and multinational maquiladoras alike aren’t built to endure. At the current Otay crossing, “commercial trucks may be in line for six hours or longer,” she says.
Needing to bake a couple hours of commute into the States doesn’t just affect vacations; tens of thousands of people cross the border each day for doctor’s appointments, work, school, you name it. The clog has personal and commercial ramifications.
But change is coming. Construction has begun on a new border crossing in Otay Mesa, which is expected to significantly reduce wait times across all San Diego border crossings, bolster binational trade, and improve the air pollution levels in the area.
Nikki Tiongco, an 18-year Caltrans veteran who oversees the Otay Mesa East project (aka Otay 2) for the agency, says the new border crossing will also be among the most high-tech, efficient, and secure border crossings in the nation.
“We have already completed the roadway network within the Otay Mesa East region,” says Tiongco. Part of this project included building State Route 11, an extension of SR 905, which has been open to the public since August and will feed traffic to the new entry port. Otay 2 comes with a 21st century upgrade, too. Miles of fiber-optic cables have been installed underground, which gives the port the brainpower to efficiently sort and streamline traffic as cars approach the border. (Unlike the San Ysidro border, where lanes get organized by vehicle type, Otay 2’s lanes will be interchangeable. For example, if the system indicates that a high number of commercial trucks is heading to the border, passenger lanes could be converted to cargo lanes in real time.)
Otay 2, driven by a binational collaboration among government agencies (Caltrans, SANDAG, General Services Administration, and U.S. Customs and Border Protection), receives both federal and state funding, plus hefty contributions from Mexico. So far, funds from the $1.3 billion project have helped build new bridges and roadway interchanges that will guide traffic to the crossing. At this stage in the process, Caltrans is “laser-focused on building the facility itself,” Tiongco says.
Now, to the juicy part: the prospect of a “20-to-30-minute border wait time” at Otay 2, according to Tiongco. Currently, there are three standard ways to cross the border at San Ysidro: Ready Lanes, General Lanes, or SENTRI Lanes. Most travelers use either the Ready or General lanes. SENTRI Lanes require a form of pre-approval from the US federal government plus an additional fee. According to CBP, the average wait time in 2025 at the San Ysidro crossing, was as little as 15 minutes in the SENTRI Lanes, 45 minutes in the Ready Lanes, and 1.5 to 2 hours in the General Lanes. Those are best-case scenarios that vary based on lane type and time of day.
Otay 2 is about 12 miles east of the San Ysidro crossing and 2.5 miles east of Otay 1. Those not wanting to spend that much extra time on the road to drive to the new border crossing, despite the allure of an under-30-minute wait, are still expected to see some benefits. Tiongco says Otay 2 will “provide a relief valve” overall by spreading the burden across the three border crossings. As a result, SANDAG says, wait times at San Ysidro and Otay 1 could be cut in half.
It’s not just your time waiting at the border that matters. Multinational corporations that relocated their manufacturing plants (maquiladoras) to Northern Baja have claimed for years that the long delays at Otay 1 eat away at their profits. More than 600 maquiladoras, used by companies such as Samsung and Panasonic, currently use Otay 1 to transport products to US and international markets. Ambassador Alicia G. Kerber-Palma, the consul general of Mexico in San Diego, says the project will facilitate more than $60 billion in cross-border trade annually.
Previous reports say that Otay 2 also has the capacity for around 12,000 passenger cars and 1,500 commercial trucks daily. A shiny, new element to this port: Commercial and personal vehicles that choose to cross will pay a dynamic toll on both sides of the border. The fee will increase during busy hours and decrease during slower periods, Tiongco says. Caltrans estimates that the toll could range from $4 to $30 for passenger vehicles and higher for commercial trucks. Drivers will be able to see current rates before they reach the actual border crossing.
And, with these changes, there are environmental benefits, too. “With shorter wait times at all three ports, there’s less idling and congestion, which should significantly reduce air pollution on both sides of the border,” says Kerber-Palma. The main factor driving improved air quality would be decreasing dirty emissions from idling diesel trucks. This county’s air could use some sprucing up, anyway. A 2026 report from the American Lung Association named San Diego as the fifth-most particle-polluted county in the US. The bulk of that dirty air comes from the heavy-duty trucks and ships that pass through the area.
Otay 2 is not only expected to curb the acceleration of air pollution in San Diego; if the state’s legislature passes California Senate Bill 10, the border crossing could also restore local water quality. This bill would use a portion of Otay 2 toll revenues to fund ongoing maintenance of the South Bay International Wastewater Treatment Plant. Current media reports say, however, that it’s increasingly unlikely that SB 10 will become law.
Otay 2 has been in the works for over two decades and is finally nearing the finish line. Construction estimates show that it should be up and running in 2029. Tiongco says this border crossing is “a good example of how the state, federal and local governments are working together and with Mexico to advance our mutual goals in the region.”
