Interstate 49 (I-49): Open Sections, Unbuilt Gaps and Safety Data

How long is I-49?

The January 2026 FHWA Route Log gives I-49 555.31 miles: 249.93 in Louisiana, 177.98 in Missouri and 127.40 in Arkansas. Only open, designated road is counted. Wikipedia puts the same road at 547.52 miles, and Interstate Guide says the full plan from New Orleans to Kansas City would come to nearly 850.

The state rows do not match the references. Wikipedia and Interstate Guide both list 239.25 miles in Louisiana, about 11 fewer than the Route Log, which carries no overlap note for I-49. AASHTO approved running I-49 along I-20 and I-220 across Shreveport in May 2019, and that link, unsigned as of 2021, may account for some of the extra Louisiana miles. Missouri goes the other way, 177.98 in the Route Log against 183.96 in both references; I-49 shares I-44 between exits 11 and 18 east of Joplin, and the Route Log appears to book that pavement to I-44. Arkansas is close, at 124.31 miles on Wikipedia and 126.86 on Interstate Guide. Since no I-49 row flags shared miles, the crash rate below divides by the Route Log rows exactly as printed.

Where I-49 starts and ends

The southern end is a cloverleaf with I-10 and US 167 in Lafayette (see the I-10 guide). I-49 carries US 167 north past Opelousas to exit 23, doubles as US 71 Bypass through Alexandria, and crosses Natchitoches Parish before it stops at I-20 in downtown Shreveport. Louisiana finished this piece on May 1, 1996, for about $1.38 billion.

The second piece, known in Louisiana as I-49 North, begins at I-220 on the north side of Shreveport. Its last section opened at the I-220 interchange on October 17, 2018, and its 11 segments cost $670 million together. Arkansas carries it on past Fouke into Texarkana, where it ends for now at US 71 and US 59 on the Texas line north of town.

The third piece starts at I-40 in Alma and climbs the Boston Mountains, going through the Bobby Hopper Tunnel in Washington County on the way to Fayetteville, Springdale, Rogers and Bentonville. The Bella Vista Bypass, opened October 1, 2021, takes it into Missouri. There it follows the US 71 corridor north, shares I-44 east of Joplin, and ends at Bannister Road in south Kansas City, just past the Grandview Triangle. US 71 keeps going toward downtown.

Shreveport's gap is small. The planned Inner-City Connector would join I-20 and I-220 with about 3.6 miles of new freeway, and a revised route made public on January 20, 2023 avoids the Allendale neighborhood. DOTD aims to settle the route with a Record of Decision by the end of 2026 and puts the cost at $800 million to $1 billion. No completion date is set, so through traffic uses LA 3132 and I-220 in the meantime.

Arkansas has the big one. Interstate Guide puts the roughly 136 miles between Texarkana and Fort Smith at $4.1 billion as of March 2022, with no construction money behind them; Wikipedia describes the same gap as a 180-mile section. Only the north end of the gap has work under way, and only on the first of four projects in the 14-mile, roughly $1.3 billion extension from Highway 22 in Barling to I-40 at Alma. ARDOT announced on October 17, 2024, that the first contract, $282.5 million for 3.1 miles from Highway 22 to Gun Club Road, had gone to Manhattan Road and Bridge. Rep. Steve Womack said in October 2026 that the next phase, working south from I-40, would go out for bids in November. A 2024 estimate cited by Wikipedia put the whole Fort Smith to Alma link at 2035, but the other three projects still need funding. The plan also calls for about five miles in Texas north of Texarkana, returning to Arkansas on a new Red River bridge, with no construction date.

South of Lafayette, AASHTO approved a future I-49 along US 90 to I-310 at Boutte on November 6, 1998, and on to the Westbank Expressway and I-10 in New Orleans on October 1, 1999. Louisiana is upgrading US 90 piece by piece; work between the Lafayette airport and LA 88 began on November 15, 2022. The Lafayette Connector, about 5.5 miles of elevated freeway from I-10 to the airport, was estimated at around $800 million in 2019, and work on it stalled in 2023 during a federal civil rights review. The project site reports a draft supplemental environmental impact statement from DOTD and FHWA in 2026, with public comments open through December 22, 2026. No construction date or funding is set.

Interstate junctions along I-49

The list reads south to north, from I-10 at Lafayette to I-44 in southwest Missouri, and each Interstate appears once. Two entries mark where a piece begins or ends: I-20 in downtown Shreveport is the top of the Louisiana piece, and I-40 at Alma is the bottom of the northern piece. I-30 is the crossing in Texarkana, and the I-44 junction near Joplin opens onto the shared stretch between exits 11 and 18.

Fatal crashes on I-49

FARS records 176 deaths in 156 fatal crashes on I-49 from 2020 through 2024, about 35 a year. Spread over its route miles, that comes to 6.3 deaths per 100 miles a year, under the Interstate network average of 9.5, and I-49 ranks 37th of 56 routes by rate (1 = highest). The yearly count rose and fell: 29 in 2020, 40 in 2021, 37 in 2022, 29 in 2023 and 41 in 2024, the worst year of the five.

Arkansas has the highest state rate, 8.0, with 51 deaths on 127.40 miles. Louisiana comes in at 6.2 with 78 deaths and Missouri at 5.3 with 47. Two northwest Arkansas counties top the county list, Washington with 21 deaths and Benton with 18. Rapides Parish in Louisiana had 16, Cass County in Missouri had 15 and Natchitoches Parish had 14.

Counties with the most I-49 crash deaths

Bridges on I-49

The 2025 National Bridge Inventory counts 653 bridges carrying the I-49 main line. Of those, 332 rate Good, 298 Fair and 23 Poor, about 3.5 percent. Missouri holds 17 of the Poor bridges among its 173, close to one in ten. Louisiana has 6 Poor out of 320, and none of Arkansas's 160 rate Poor. The median bridge dates from 1989, and Wikipedia says 95 percent of the rural Louisiana mileage opened between late 1987 and late 1989.

The Arkansas River crossing between Barling and Alma is still being built, so the inventory does not include it. It will be 5,232 feet long, with a separate 1,822-foot bridge over Flat Rock Creek and Gun Club Road. Talk Business reported on October 5, 2026 that the $282.5 million contract was about half complete and ahead of schedule.

Tolls on I-49

FHWA's toll inventory dated January 1, 2023 lists no toll facilities on I-49, so a trip over every open piece costs nothing beyond fuel. Wikipedia and Interstate Guide report no priced lanes opened on it after that date. Tolls have come up before: Governor John McKeithen proposed a toll road for the corridor in 1965 that was never built, and a toll was considered for the Bella Vista Bypass to Pineville section and then dropped.

From the North-South Expressway to a three-state Interstate

I-49 was not part of the 1957 Interstate plan. A booster group, the US 71/I-29 Association, started campaigning for the corridor in 1965, FHWA approved the route in the mid-1970s, and AASHTO assigned the number in the summer of 1977. In 1981 AASHTO extended it south along US 167 to I-10 at Lafayette. Wikipedia dates the start of construction to 1981, between Opelousas and Washington, while Interstate Guide says work began in April 1980. In its early years the road was commonly called the North-South Expressway. Most rural miles opened between late 1987 and late 1989, and the Lafayette to Shreveport road was done on May 1, 1996.

Congress named the extension to Kansas City High Priority Corridor 1 in the 1991 ISTEA law. In 2007 AASHTO refused the I-49 number for Arkansas and Missouri roads not yet under construction. AASHTO gave Missouri conditional approval on October 14, 2011, and the designation became official on December 12, 2012 at a ceremony at Joplin East Middle School, covering 180 miles of upgraded US 71. In Arkansas, Fouke to Texarkana opened on December 16, 2004, the Texarkana bypass on May 15, 2013, and the rest of the link to Louisiana on November 10, 2014. Arkansas swapped its I-540 signs north of Alma for I-49 in March 2014. The Bella Vista Bypass joined Arkansas to Missouri on October 1, 2021.

I-49 traffic and road conditions

Louisiana, Arkansas and Missouri each run a traveler information site for closures, crashes and roadwork on their share of I-49, linked below. In Louisiana, slow sugarcane wagons use the road during harvest, and Wikipedia notes they cause congestion and crashes. Construction around Barling and Alma belongs to the Arkansas River crossing project.

I-49 questions