Interstate 11 (I-11): Las Vegas Route, Proposed Corridor and Safety Data

How long is I-11?

The FHWA Route Log lists 54.19 miles for I-11, all in Nevada, which matches the length Wikipedia gives. No other Interstate overlaps I-11, so the Route Log books every one of its miles here. It does carry two US highways: US 93 from the Arizona line to I-15, and US 95 from exit 14 at Boulder City to the northern end.

Older articles describe a much shorter road. Until May 21, 2024, I-11 ran about 23 miles, from the Arizona line around Boulder City and into Henderson. That day Nevada extended it about 30 miles along the former I-515 and US 95 through the Las Vegas Valley and retired the I-515 number.

Where I-11 starts and ends

The southern end is the Arizona state line on the Mike O'Callaghan-Pat Tillman Memorial Bridge, which carries the Hoover Dam bypass over the Colorado River and opened to traffic on October 19, 2010. US 93 continues into Arizona without an I-11 shield. The northern end is exit 96 in northwest Las Vegas, at Nevada 157 (Kyle Canyon Road) and Sunstone Parkway, where US 95 keeps going north on its own.

Heading north from the bridge, the route bypasses Boulder City, passes the Railroad Pass exits and runs through Henderson to I-15 at the Spaghetti Bowl near downtown Las Vegas. From there it follows US 95 northwest across the valley.

Interstate junctions along I-11

I-15 is the only main Interstate that I-11 meets, at the Spaghetti Bowl (I-11 exits 76A and 76B, I-15 exit 42). Because I-11 crosses I-15 there, its northern part lies west of I-15, which brings the route into line with the national numbering grid. Farther south, exit 23 in Henderson connects to I-215, a three-digit branch of I-15. Exit numbers switch systems along the way. South of I-215 they follow I-11's own mileage, while north of it they still follow US 95 mileposts, which is why a 54-mile road ends at exit 96.

Fatal crashes on I-11

NHTSA's FARS file records 14 deaths in 12 fatal crashes on I-11 from 2020 to 2024, all in Clark County, or about 3 a year. At 54.19 miles the route is under the 100-mile minimum for a death rate, so it is too short to rank against the 56 routes that have one.

The yearly count went from none in 2020 to 3 in 2021, 2 in 2022, 3 in 2023 and 6 in 2024. Read the early years with that history in mind. Until May 2024 most of today's route was signed I-515 and US 95, and crashes coded to those numbers are not counted here, so the 2020 to 2023 figures mostly cover the Boulder City Bypass and the Henderson stretch.

Counties with the most I-11 crash deaths

Bridges on I-11

The 2025 National Bridge Inventory lists 26 bridges carrying the I-11 main line, all in Nevada. Every one of them rates Good, so the share in Poor condition is zero. Their median year built is 2017, the year the first lanes of the Boulder City Bypass opened.

Tolls on I-11

Nothing on I-11 appears in FHWA's list of toll facilities as of January 1, 2023. Our two route references, Wikipedia and Interstate Guide, mention no tolled lanes added since then. A trip from the Hoover Dam bridge to Kyle Canyon Road costs nothing beyond fuel.

I-11 history and the proposed extension

Congress designated I-11 in a 2012 federal funding bill, and AASHTO approved the route on May 29, 2014. The first piece built was the Boulder City Bypass, about 15 miles around the town. Its first southbound lanes opened in August 2017, and the second phase, a $235 million design-build contract awarded in January 2015, opened on August 9, 2018 to finish the bypass. Crews found naturally occurring asbestos on the alignment in December 2013, and containing it was estimated to add at least $12 million.

A Nevada law named I-11 the Purple Heart Highway, effective July 1, 2019. In October 2022 AASHTO's route numbering committee approved NDOT's request to carry I-11 through Las Vegas, and Nevada began signing the extension along the former I-515 and US 95 to Kyle Canyon Road on May 21, 2024. Crews replaced the last I-515 signs between I-215 and the Spaghetti Bowl in summer 2025.

No I-11 exists north of Kyle Canyon Road yet. The 2015 FAST Act approved federal corridor extensions north to Reno and south to Nogales, but nothing past I-80. NDOT's alternatives analysis studies the gap from the northwestern edge of Las Vegas to I-80, and on July 26, 2018 the department chose Fernley, at I-80 and US 95 Alternate, as the future northern end. Studies of a first step north, to Mercury, began in late 2023. NDOT is studying the corridor as a four-lane divided highway with limited access and says construction could be phased over decades.

Arizona has no signed I-11. ADOT and FHWA began a Tier 1 environmental study in 2016 for a 280-mile corridor from Nogales to Wickenburg, and a Record of Decision followed in November 2021. Conservation groups, among them the Center for Biological Diversity, sued in 2022 to block the highway, objecting most of all to the west option through Avra Valley near Saguaro National Park and Tucson Mountain Park, and to impacts on the Ironwood Forest and Sonoran Desert national monuments. In January 2025 FHWA agreed in federal court to re-evaluate that decision and to take no further steps to advance planning while it does, which leaves the route through or around Tucson undecided.

Arizona has more to show at the northern end. It has been upgrading US 93 between Wickenburg and Hoover Dam to an expressway since 1998, and parts near Arizona 68 already meet Interstate standards. The Arizona Legislature funded a Tier 2 study for Buckeye to Wickenburg in 2022, the only segment with money set aside for project-level environmental work. On August 17, 2026, Senator Mark Kelly asked FHWA to explain within 60 days what work can proceed on the northern segments, Wickenburg to Buckeye and Buckeye to Casa Grande, while the court stay remains in place. As of November 2026, FHWA had not published the re-evaluation or opened its comment period.

I-11 traffic and road conditions

All of I-11 sits inside Nevada, so a single NDOT traveler site covers it, from the Hoover Dam bridge and the Boulder City Bypass to the Spaghetti Bowl and Kyle Canyon Road. For US 93 south of the state line, switch to Arizona's traveler information.

I-11 questions