If you were planning to drive into Yosemite National Park via Highway 140 this weekend, your route has been abruptly cut off. Two rockslides struck SR-140 on Sunday, April 13, 2026, prompting Caltrans to shut down one of the most-used western entrances to Yosemite indefinitely — with no estimated time to reopen. Whether you're a local headed to the valley or a traveler with reservations in hand, here's everything you need to know about the closure, your alternatives, and what this means for Yosemite access in the days ahead.
What Happened: Two Rockslides in One Day
On the morning of Sunday, April 13, 2026, two separate rockslides came down on SR-140 in Mariposa County, approximately 4.5 miles west of Incline. The slides created an immediate hazard on one of California's most scenic mountain highways, a two-lane route that winds through the Merced River Canyon toward Yosemite's Arch Rock entrance.
Mariposa CHP announced that SR-140 is closed in both directions between Cedar Lodge and Yosemite Bug until further notice, according to Sierra Sun Times. Caltrans followed with confirmation that the road would remain closed overnight from Bear Creek Bridge to Cedar Lodge for rockslide removal, with crews working to assess and clear the debris.
By 1:45 AM on April 13, Caltrans confirmed the overnight closure was still in effect and that there was no expected timeframe (ETO) for reopening. That phrase — "no ETO" — is significant. It signals that engineers haven't yet determined whether additional rock is unstable above the highway, which makes a firm reopening estimate impossible and potentially dangerous to commit to.
SF Gate reported the closure as a full shutdown of one of the main highways into Yosemite National Park, underscoring the significance of this route to the region's tourism infrastructure.
Why Highway 140 Matters for Yosemite Access
Yosemite National Park has four primary vehicle access routes, but they are not equally convenient or equally used. SR-140 — the El Portal Road corridor — is one of the most traveled western entrances for visitors coming from the Bay Area, Central Valley, and Fresno metro. It offers a lower-elevation approach compared to SR-120 (Tioga Road), which is often closed through winter and spring due to snow.
The stretch between Cedar Lodge and Yosemite Bug hugs the Merced River through a steep-walled granite canyon. It's beautiful driving — and that's exactly what makes it geologically precarious. Rockfalls in this canyon are not rare occurrences. The sheer canyon walls, seasonal freeze-thaw cycles, and heavy winter precipitation all conspire to loosen rock regularly. What's unusual here is two slides in one day, which suggests a broader geological event or a significant destabilization event affecting the slope above the road.
For travelers already mid-trip — those staying at Cedar Lodge, Yosemite View Lodge, or driving from Mariposa — this closure doesn't just reroute them. It physically cuts off their path into or out of the park until crews can determine the slope is stable and clear the debris.
Current Road Status and How to Get Updates
As of the latest Caltrans update on April 13, 2026:
- SR-140 is closed in both directions between Cedar Lodge and Yosemite Bug
- The overnight closure from Bear Creek Bridge to Cedar Lodge is in effect for rockslide removal
- There is no estimated time to reopen
- Caltrans crews are working on removal, but the scope depends on geotechnical assessment
For real-time status updates, motorists have two primary options:
- Call Caltrans: 1 (209) 372-0200
- Check Quickmap: Quickmap.dot.ca.gov shows live road closures, incidents, and camera feeds on California state highways
The MSN/local news roundup also confirms these channels as the official sources for tracking when the road reopens.
If you're heading to Yosemite in the next 48–72 hours, check Quickmap the morning of your drive before committing to the SR-140 approach. Conditions can change — both for better (quick removal) and worse (additional rockfall after assessment).
Alternate Routes: How to Get Into Yosemite Now
Caltrans has officially advised SR-41 as the alternate route. Here's a practical breakdown of your options depending on where you're coming from:
SR-41 (South Entrance — Wawona Road)
SR-41 runs from Fresno north through Oakhurst and Fish Camp to enter Yosemite at the South Entrance. This is the officially recommended alternate and is typically open and in good condition through spring. The trade-off: if you're coming from the Bay Area or Sacramento, SR-41 adds meaningful drive time. From San Jose, expect roughly 30–45 extra minutes compared to the normal SR-140 approach.
SR-120 (Big Oak Flat Road — West Entrance)
SR-120 west enters through the Big Oak Flat entrance and is generally accessible in spring when the Tioga Pass (SR-120 east) is not. Coming from Stockton, Modesto, or the northern Central Valley, this route may be more natural than diverting to SR-41. Check NPS.gov or Quickmap for current SR-120 conditions before heading out.
SR-120 East (Tioga Road)
This route is typically closed until late spring or early summer due to snowpack. Unless there's been an early season opening announcement from NPS, don't count on Tioga Pass as an option in mid-April.
Bottom line: SR-41 is your best bet if you're coming from the south or west. If you're coming from the north or east Bay, SR-120 west via Big Oak Flat is worth considering. Either way, budget extra time.
What to Pack for Yosemite Road Trip Delays and Detours
A closure like this is a reminder that Yosemite's mountain approaches can change fast. Whether you're rerouting or waiting out the closure at a gateway town, a few items in the car make a significant difference:
- A portable car phone mount to keep navigation hands-free when rerouting on unfamiliar roads
- A car emergency roadside kit is essential on mountain highways where cell service can drop
- A portable power bank car charger to keep devices alive while checking updates and rerouting
- A national parks travel atlas as a paper backup when you lose signal in the canyon
- Hiking snacks and trail mix — unexpected waits at closures are much easier with food in the car
Analysis: What This Closure Reveals About Yosemite's Vulnerability
This isn't the first time SR-140 has shut down, and it won't be the last. The Merced River Canyon corridor has a documented history of rockfall events, and climate-related factors are making them harder to predict. Warmer winters mean less consistent snowpack but more freeze-thaw cycling on canyon walls — which is one of the primary mechanisms for loosening rock. Heavy precipitation events followed by rapid warming are particularly destabilizing.
What's notable about the April 13 event is the scale: two separate rockslides in the same day, significant enough to trigger an indefinite closure with no ETO. That's not a minor debris cleanup — that's a geotechnical situation. Caltrans engineers will need to inspect the slope above the road, possibly use drones or geotechnical assessment tools, and determine whether there's additional unstable material before they can safely allow traffic to return.
For Yosemite as an institution, this kind of closure exposes a structural vulnerability in park access. The park draws roughly 3.5–4 million visitors per year, and a disproportionate number arrive via a small number of two-lane mountain highways. There is no redundancy. When one route closes, there's no quick substitute — just longer detours and disrupted plans for tens of thousands of travelers.
The timing is also significant: mid-April is the start of peak spring season for Yosemite. Waterfalls are at their highest, crowds are building, and many visitors have non-refundable reservations. A closure without ETO during this window is a genuine logistical crisis for the gateway communities — Mariposa, El Portal, Midpines — that depend on pass-through and destination tourism.
If you're traveling soon, the practical takeaway is this: always have a backup route planned before driving to Yosemite, especially in spring when geological conditions are most active. Check Quickmap the morning of your trip, not just the night before.
Frequently Asked Questions
When will Highway 140 reopen?
As of April 13, 2026, there is no estimated time of opening (ETO). Caltrans has closed the road indefinitely pending geotechnical assessment and rockslide removal. The timeline depends entirely on how much debris needs to be cleared and whether engineers determine the slope above is stable. For the most current status, call 1 (209) 372-0200 or check Quickmap.dot.ca.gov.
What is the alternate route to Yosemite while SR-140 is closed?
Caltrans officially recommends SR-41 as the alternate route. SR-41 enters Yosemite via the South Entrance near Wawona. SR-120 West (Big Oak Flat entrance) is also an option for visitors coming from the northern Central Valley or East Bay. Tioga Pass (SR-120 East) is typically not yet open in mid-April due to snow.
Is Yosemite Valley still accessible?
Yes. The SR-140 closure affects one access corridor, but Yosemite Valley remains accessible via SR-41 (South Entrance/Wawona) and SR-120 West (Big Oak Flat). If you have a reservation or timed entry permit, your access to the park isn't revoked — you just need to use a different entrance. Check with NPS for any permit adjustments if your planned entry point has changed.
Are hotels and lodges near the closure affected?
Properties like Cedar Lodge and Yosemite View Lodge are near the closure zone. Guests staying at these properties may have limited road access depending on which direction the closure extends. Contact your lodging directly to understand whether access from the west is possible via alternate roads, or whether you should approach from the park side via SR-41 or SR-120 West.
Is this a common occurrence on Highway 140?
Rockfall events on SR-140 through the Merced River Canyon occur with some regularity, particularly in late winter and spring when freeze-thaw cycles and rainfall loosen canyon walls. However, two rockslides in a single day triggering an indefinite closure is more unusual. The canyon's steep granite walls make this stretch inherently prone to geological activity, and Caltrans maintains active monitoring systems along the corridor.
What Travelers Should Do Right Now
If you have imminent Yosemite plans, here's the action checklist:
- Check Quickmap at Quickmap.dot.ca.gov the morning of your trip for live closure status
- Plan your route via SR-41 or SR-120 West as your primary approach, and don't assume SR-140 will open before your trip
- Contact your lodging if you're staying near the closure area (Cedar Lodge, Yosemite Bug, Yosemite View Lodge) to confirm access options
- Check your Yosemite reservation — timed entry permits are linked to specific dates, not specific entrances, so you should still be able to enter via an alternate gate
- Follow Caltrans District 10 on social media for real-time updates on restoration progress
The Merced Canyon will reopen — it always does. But the geological uncertainty that comes with "no ETO" is real, and travelers heading to Yosemite this spring weekend should plan as though SR-140 will remain closed for their trip. That means building in extra drive time, checking conditions morning-of, and having SR-41 loaded in your navigation as a default.
Yosemite in spring is worth the detour. The waterfalls don't care which road you took to get there.
