The intersections that connect Carlson Drive with H and J Street in East Sacramento are either a cyclist’s nightmare or a daredevil’s dream. Vehicles whiz by at freeway speeds onto streets with obscured traffic lights. Lanes are confusingly split into three separate sections by raised islands. Cyclists battle for already-narrow lanes against encroaching transit busses. Left turns become a biker’s harrowing tale of the day while even pedestrians find themselves scrambling across streets without the security of crosswalks.

Welcome to the Carlson Corridor.

The Carlson Corridor is a critical crossroad that connects traffic from California State University Sacramento and the American River Trail. The volume of daily traffic combined with the unconventional design of the Corridor has led to numerous close calls and near misses, though not everyone has been so lucky. The corridor has laid claim to the lives of two cyclists and a motorist within the past three years.

After over a year of debate and community discussion, city council members will vote Tuesday on whether to authorize city staff to seek federal grant funding for bike and pedestrian safety improvements to the Corridor, including the addition of left turn traffic signals, new crosswalks and other street design changes.

The process to get to the vote was in large part driven by the Sacramento Area Bicycle Advocates. After the second cyclist’s death in April of 2011, SABA began researching the Corridor’s design issues and spoke to locals, including the River Park Neighborhood Association, about their concerns. In a few months, SABA produced a set of recommended changes and teamed up with the RPNA to present the plans to city officials in a meeting in May of 2012.

City staff promised to take action, and the wheels began rolling in May of this year, when the city released four preliminary drafts with proposed changes to the intersections that reflected many of SABA’s recommendations.

Jim Brown, director of SABA, notes that much of the necessary construction’s costs will be significant. Still, rather than seeking separate grants for individual phases, Brown feels it would be more sensible for the city to pursue funding which would address all of SABA’s recommendations. “If [the city] is going to go after grant funding, then they might as well go after grant funding for everything they want to do.”

According to Ed Cox, city of Sacramento’s bicycle and pedestrian coordinator, the city currently has sufficient funds to go ahead with the first part of the plan of adding green paint to existing bicycle lanes – regardless of whether it obtains additional grant funding or not. These changes are supposed to occur sometime later this summer or fall.

The next phase requires heavy construction and the city would need to seek federal funding via Caltrans in order to move forward — hence the vote on Tuesday. If it receives funding, this phase, called “Option B,” would square off Carlson and J Street, add two crosswalks for pedestrians on H and J, and install Sacramento’s first bike boxes, or painted boxes at intersections where bicyclists can congregate ahead of waiting traffic.

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A portion of paved trail along Lake Natoma will be closed two days next week for repair work.

A section of trail has lifted and needs to be repaired and repaved. To do the work on the south side of Lake Natomas between Lake Natoma Crossing and the Young Wo Access, the short section of trail needs to be closed.

The work will close the trail on Monday and Tuesday.

For more than a decade, Sacramento has been rebuilding the string of interchanges that serve Highway 50, giving each a muscular, modern design, preparing them for an expected east county growth boom in the coming years.

Sunrise was upgraded years ago. Zinfandel, Mather Field and Bradshaw, too. Now, it’s Watt Avenue’s turn.

Unlike the earlier interchanges, though, the $23 million Watt project, under way since November, includes an extra set of amenities designed to decrease the region’s heavy reliance on cars.

Watt will get new lanes in each direction, making it the widest overpass in Sacramento, and its tight merge lanes will be replaced with broader, straighter ramps.

But Sacramento County officials have also added a center lane reserved for buses only, and are building a separate paved pathway for pedestrians and cyclists, with underpasses that will enable those groups to get over the freeway without having to cross streets or freeway ramps.

The result, Sacramento County officials say, will be to turn the section of Watt Avenue at Highway 50 into a multi-use transportation corridor.

“You’ll have cars, buses, bikes and pedestrians using one interchange without conflict,” project manager John Jaeger said. “As far as I know, there is nothing like it in the state.”

The bus “guideway” will run from the Regional Transit light-rail station south of Folsom Boulevard over the freeway to La Riviera Drive on the north side.

Transit officials say they hope the sight of buses driving past stalled traffic will encourage more commuters to try transit.

“Traffic can be stopped, and the buses go flying by,” RT General Manager Mike Wiley said during project groundbreaking ceremonies.

Wiley said his agency hopes eventually to extend the bus lane concept to other parts of Watt. But roadway space is limited. The separate bus guideway on the overpass will contain only a single lane.

Buses will have to be scheduled so that two buses coming in opposite directions are not trying to cross the bridge at the same time.

Some residents have expressed concerns about the safety of the four planned bike and pedestrian underpasses, saying they fear someone looking to commit a crime might lurk there.

On a tour of the site last week, Sacramento County’s Jaeger pointed out that those underpasses are short, wide and well-lighted. Pedestrians and cyclists will be able to see through each tunnel for some distance beyond as they approach it.

“We’ve designed these for maximum visibility,” Jaeger said, standing at the broad entrance to the first of the underpasses.

Jaeger said the new design will create a more pleasant cycling connection between Folsom Boulevard and the American River.