Highway 37 Temporary Closed at North Dakota Border
The South Dakota Department of Transportation, in cooperation with the North Dakota Department of Transportation, has closed Highway 37 at the ND/SD border due to water and ice on the roadway making safe travel impossible.


Construction on Interstate 229 in Sioux Falls
The South Dakota Department of Transportation says southbound traffic on Interstate 229 at Western Avenue will be reduced to one lane beginning Friday, Nov. 1.


SOUTH DAKOTA PROGRAM TO REDUCE ROADWAY DEPARTURE CRASHES IN WINTER WEATHER WINS NATIONAL ROADWAY SAFETY AWARD
The South Dakota Department of Transportation (SDDOT) was honored last week in a ceremony on Capitol Hill with a National Roadway Safety Award for the success of its “High Friction Surface Treatment” (HFST) program to address road departure crashes in winter weather.


Ramps Opening on I-90 Exit 402
The South Dakota Department of Transportation will be opening the on and off ramps of Exit 402 on Interstate 90 Friday, Oct. 25.


Construction Starting on Westbound Interstate 90 Bridges over Interstate 29 and Silver Creek
Starting today, Oct. 22, the South Dakota Department of Transportation will begin high surface friction treatment work in the westbound passing lane of the Interstate 90 bridge over Interstate 29 and the westbound driving lane of Interstate 90 bridge over Silver Creek.


Railroad Crossing Work To Begin in Wall
The South Dakota Department of Transportation says railroad crossing work will begin in Wall on the Interstate 90 Loop/Hwy 240 near the Wall School on Friday, Oct. 18.


Block Closure Work Begins on U.S. Highway 212 in Watertown
On Monday, Oct. 7, Reede Construction will move into the Phase 1 Block Closure portion of the Highway 212 project.

Additional Lane Closures on Highway 212
The South Dakota Department of Transportation says the contractor will be closing Highway 212, one-half at a time, starting Monday, Oct. 7, from the Highway 15 south junction west for one mile.


Updated - Construction to Begin on Interstate 90 Exit 396 Ramp
Clarifies closure and detour routes. Starting Monday, Oct. 7, the South Dakota Department of Transportation will begin high surface friction treatment work on the Interstate 90 Exit 396 ramp to southbound Interstate 29.


Work on I-90 near Whitewood
On Monday, Sept. 30, 2019, crews will begin concrete pavement repairs in the westbound lanes of I-90 near Whitewood.


Highways 20 and 79 Pavement Repair Project Postponed
The South Dakota Department of Transportation is postponing the pavement repair project on Highway 20 and 79 in the northwestern part of the state until 2020 due to weather delays experienced by the contractor.


Highway 79 Slide and Erosion Repairs
Beginning the week of Sept. 29, crews will begin slide and erosion repairs at the following locations on Highway 79:

Rail STC Grant Funds Available
The South Dakota Department of Transportation has been informed by the U.S. Department of Transportation’s (USDOT) Federal Railroad Administration (FRA) that approximately $12.7 million of Special Transportation Circumstance (STC) grant funds are available the State.


Highway 42 Bridge Reopening
The South Dakota Department of Transportation is working to reopen the James River Bridge on Highway 42 the afternoon of Tuesday, Sept. 24.

Highway 12 Being Reduced to One Lane from Roscoe to Ipswich
The South Dakota Department of Transportation will begin asphalt concrete work on Highway 12 from Roscoe to Ipswich on Tuesday, Sept. 24.


Construction to Begin on Highway 115 (Minnesota Ave.) North of Renner
SIOUX FALLS, S.D. – Starting Monday, Sept. 23, the South Dakota Department of Transportation will begin pavement repair and high friction surface treatment work on Highway 115 north of Renner from mile marker 93.24 to mile marker 93.82.


I-90 Exit 357 Flooding Update
South Dakota Department of Transportation crews have been working this week to create a water barrier along the westbound lanes of Interstate 90, just east of Exit 357 (Bridgewater), to divert the water from continuing to overtop the interstate.


Highway 44 Rock Scaling
The South Dakota Department of Transportation says rock scaling on Highway 44 between Chapel Lane and Cleghorn Canyon Road will begin Tuesday Sept. 17, at 8 a.m. depending on weather.

Department of Transportation Seeks Public Input into the I-90 Exit 406 (SD11 / Splitrock Boulevard) Interchange EA
The (SDDOT), in collaboration with the Sioux Falls Metropolitan Planning Organization (MPO) and the city of Brandon, will hold a public open house from 6 p.m. to 7:30 p.m. on Wed. Sept. 18, 2019, at the Holiday Inn Express Convention Center, (1103 N Splitrock Boulevard) to present and collect comments for improvements to the I-90 Exit 406 interchange and associated SD11 / Splitrock Boulevard corridor.

Reminder to Remove Hay Bales from the Right of Way
The South Dakota Department of Transportation reminds land owners hay remaining in highway ditches after Oct. 1 is deemed illegal.


I90 Open- Drivers Cautioned To Lane Closures and Reduced Speeds
The South Dakota Department of Transportation is advising motorists that Interstate 90 is open with reduced speeds, lane closures and flaggers monitoring and guiding traffic.


I-90 To Remain Closed
The South Dakota Department of Transportation is advising motorists that portions of I-90 will remain closed overnight and remain closed until further notice.

Portions of I-90 opening
The South Dakota Department of Transportation is advising motorists that Interstate 90 westbound is open from the Bridgewater Exit 357 west and remains closed from Humboldt Exit 379 to Bridgewater Exit 357 with through traffic detoured at Sioux Falls Exit 396 to northbound I-29.


I-90 Closed From Exit 310 to I-29
The South Dakota Department of Transportation is advising motorists that Interstate 90 is now closed between Highway 281 (Exit 310) and Interstate 29 (Exit 396) at Sioux Falls.


Traffic Detour on Highway 15 in Milbank
The South Dakota Department of Transportation will be closing Highway 15 in Milbank on Tuesday, Sept. 10, to replace signals on a railroad crossing.


I-229 Closures for New 26th Street Bridge Work
The South Dakota Department of Transportation says Interstate 229 between the Cliff Avenue and 10th Street exits will be closed beginning Monday, Sept. 9, from 8 p.m. to 6 a.m. for up to eight nights


Highway 48 Surfacing Begins at the Iowa line
The South Dakota Department of Transportation says work is progressing to repair the flood damaged portion of Highway 48 near the Iowa state line with paving operations starting this week.


Work on Main Street in Hill City
The South Dakota Department of Transportation says a project on Main Street in Hill City is beginning today, Sept. 3.

Updated timeline: Interstate 29 Bridge Work Planned
The South Dakota Department of Transportation is advising motorists that southbound Interstate 29 will be reduced to one lane of traffic between 26th Street (Exit 78) and 12th Street (Exit 79) in Sioux Falls on Tuesday, Sept. 5. This was rescheduled from Sept. 3, due to weather.


Three Counties Receive Federal Grant Funding to Replace Bridges
U.S. Transportation Secretary Elaine L. Chao has announced the recipients of $225 million in Competitive Highway Bridge Program (CHBP) grant funding. South Dakota was one of 18 states to receive a portion of this funding to make critical upgrades to select bridges in rural areas.

Curb and Gutter Installation on Highway 14A
The South Dakota Department of Transportation says construction will start for concrete curb & gutter installation on Highway 14A east of Deadwood on Tuesday Sept. 3, 2019.

Highway 16/Mt. Rushmore Road Erosion Repair in Rapid City
On Thursday, Sept. 5, crews will begin work on an erosion repair project adjacent to the southbound lanes of Highway 16/Mt. Rushmore Road, between Cathedral Drive and Tower Road in Rapid City.


Preliminary Engineering Local Bridge Improvement Grant Recipients Announced
The South Dakota Transportation Commission awarded 35 Preliminary Engineering Local Bridge Improvement Grants (BIG) totaling $1.42 million at their meeting today in Pierre.


Highways 44 & 79 Asphalt Crack Sealing
During the week of Sept. 1, crews will begin routing and sealing cracks on the shoulders of Highway 44 east of Rapid City and on the roadway surface of Highway 79, north of the Highway 79/168 junction (Castle Rock).

Resurfacing on Highways 1804 and 204 Set to Begin
The South Dakota Department of Transportation says work will begin Sept. 4, on an asphalt resurfacing project on highways 1804 and 204 near Pierre.


Phase 2B Work To Begin on Highway 212 in Watertown
Reede Construction will move into phase 2B of the Highway 212 project in Watertown on or before Wednesday, Aug. 28.

High Friction Surface Treatment on Interstate 90
The South Dakota Department of Transportation says construction will start for a High Friction Surface Treatment (HFST) on the westbound Interstate 90 Exit 57 off ramp to southbound Interstate 190, on Sunday Aug. 25, 2019.


Grade Raise on Highway 81 Started
ARLINGTON, S.D. - The South Dakota Department of Transportation today announced that work to raise the grade on Highway 81 south of Arlington has begun. The highway is closed to traffic due to high lakes levels overtopping the roadway and has been impacted by flooding since March

Highways 20 and 79 Pavement Repair Project Starting
Crews will begin culvert repairs along Highway 79 from the North Dakota border south for 13 miles and along Highway 20 from 10 miles west of Reva to Prairie City, beginning Thursday, Aug. 22.


Chip Seal, Fog Seal & Microsurface Projects in the Yankton Area
YANKTON, S.D. – The South Dakota Department of Transportation says chip seal, fog seal, and microsurface applications will be applied to several highways in the Yankton Area of the state beginning Wednesday, Aug. 21, and will move from one project to the next in the following order: