Arapahoe County Roadway Projects
Safely moving you in, out and throughout Arapahoe County.
Commuting where we live, work and play is a daily activity. It can take many forms from driving, biking, and taking public transit. Arapahoe County wants your experiences to be safe and as stress-free as possible. The ultimate objective is to create safe roadways, manage congestion, connect communities, maintain our infrastructure and plan for guided growth – all critical components of your quality of life as a resident of Arapahoe County.
Explore current and featured projects provided by Arapahoe County Public Works and Development and its valued partners including local municipalities, highway authorities and other governmental agencies. Projects featured include active projects, those that were recently completed, and an outlook to the future.
Managing Congestion
Arapahoe County operates and maintains more than 1,000 lane miles of roads. Many are critical pieces of the overall network that help alleviate congestion, provide quality of life and ensure shorter response times in emergency situations. We don’t have to tell you that roads in Arapahoe County have challenges. Alleviating congestion is a critical need due to a growing population, and the corresponding additional cars on the road.
These are the projects that the County is working on to keep you moving efficiently to where you need to go. Population growth isn’t going to stop, and neither will the congestion. But we can manage it better.
Dry Creek Road turn lane
Bottlenecks are a frustrating part of daily life. An example of a short-term solution is adding a designated eastbound turn lane along Dry Creek Road. The turn lane is geared to keep traffic moving more efficiently.
Quincy/Gun Club Intersection
This area is getting a major upgrade called a Partial Continuous Flow Intersection. What does that mean? Traffic will soon be able to enter a left turn lane about a quarter mile away to continuously flow and bypass the intersection.
New Intersection: Quincy Ave.,/Gun Club Rd.
Safer Roadways
About 28% of Arapahoe County roads are considered in poor or very poor condition. Allowing roads and bridges to deteriorate costs 10 times more than keeping them properly maintained, taxing the County budget and requiring additional investment. Making roads safer comes in many forms, from reconfiguration to rehabilitation, widening and even signal timing and coordination. These projects are all designed to make your commute safer.
Explore this map of safety improvement projects that are in progress or recently completed.
Jolly Road Bridge Repair
Jolly Road bridge was completed in late 2020 ahead of schedule and under budget. This and three other bridges in the vicinity were in very poor condition. These improvements make safer routes for buses with school children, trailers full of livestock and our eastern community residents.
Planning our Future
Because County roads are part of an interconnected regional system, it is critical that the County coordinate with cities, the state and federal transportation plans to get the most for its investments. These planning efforts are typically multi-year and require matching dollars that have not yet been defined.
The transportation network (roads, trails, buses, light rail) is impacted by changes in the community. For the network to evolve and meet the changing needs of our communities, a thorough planning process is implemented.
Planning projects can take years, but for good reason. Plans are needed to ensure short, mid and long-term solutions are identified, to fully understand current and future conditions and to develop the most efficient solutions to enhance the network. Check out these projects that will keep you moving in, out and throughout the County for years to come.
Santa Fe Preliminary Environmental Study
This environmental study aims to improve travel along and around Santa Fe Drive between C-470. This is an ongoing conversation between jurisdictions and the traveling public. Get involved and provide feedback by visiting the project page.
2040 Transportation Master Plan
In 2021, Arapahoe County updated the existing Transportation Master Plan with an eye toward 2040. Arapahoe County is the fastest growing county in Colorado. As the population increases, the need for transportation infrastructure does too. This plan creates a vision for the County's transportation network - a vision this is critical to minimize congestion, provide quality of life, ensure shorter response times in emergency situations and guide future growth.
Connecting Communities
Arapahoe County has a strong network of beloved regional trails that serve as the backbone of the bicycle and pedestrian network for recreation and commuting. One of the County’s goals is to increase biking and walking activity. A connected and accessible network is critical to achieving this goal. The current system id disjointed and has gaps. These projects will help create a cohesive network that extends beyond jurisdictional boundaries.
The current network of trails, on-street bike lanes and safe pedestrian crossings is disjointed and has gaps. Every year, Public Works plans projects to ultimately create a cohesive network that extends beyond jurisdictional boundaries. Check out these in-progress or recently completed projects.
Live, Work, Play and Bike
This bustling micro-community boasts residents, businesses and amenities. Inverness Drive West is an ideal location to provide a bikeway with low-stress cycling opportunities. This is the first of several projects that will provide regional cycling opportunities and connections between Denver and Lone Tree.
Denver's Favorite Ditch
A half million people use the Highline Canal annually. This intersection is busy and at the confluence of Denver and Arapahoe Counties. This partner project will provide a safe underpass beneath Parker Road and Mississippi Avenue for trail users.
Construction of a new underpass to connect the High Line Canal Trail beneath Parker Rd. and Mississippi Ave.
Maintaining Roads
So far in this story, you’ve explored how the County studies, plans and implements new projects and enhancements to existing infrastructure. Let’s talk about how it maintains an incredible inventory of roads, bridges and other transportation assets within unincorporated Arapahoe County.
The goal is to use the right treatment on the right road at the right time, by matching the maintenance needs with the appropriate rehabilitation or preservation procedure.
There are about 350 miles of paved roads and approximately 220 miles of gravel roads to maintain within the County. These roads, which include bridges, drainage culverts and a lot of signs, need to be continuously inspected and managed. Explore this Cone Zone map to learn more about active projects near you. From paving, to patching potholes and wide cracks, check out 2021 projects in your neighborhood.
Roads are Recyclable?
Did you know roads are recyclable? When paved roads are resurfaced, the topcoat that is skimmed off can be recycled and put down to maintain gravel roadways. County crews use recycled materials to make your tax dollars go further.
Culverts are cool. No, seriously!
Water needs a place to go and flooded roads are not only serious threats to safety but also causes significant damage. Keeping culverts clean is a cost saving measure brought to you by Arapahoe County Road and Bridge.
Projects Map
Explore all of the current Capital Improvement Projects in this interactive map. Clicking on a feature on the map will display more information.
CIP Projects
Capital Improvement Program
Arapahoe County Lima Plaza
6924 S. Lima St. Centennial, CO 80112
Ph: 720-874-6500
Hours: M-F 8am - 4:30pm
