Highway

Below is MaineDOT's methodology to provide a fair, structured framework to prioritize programs and projects. There are two parts - the Highway Corridor Priority (HCP), and the Customer Service Level (CSL).

See the glossary for the descriptions of each level in the priorities.

This data is available for viewing in the MaineDOT Map Viewer.

Highway Corridor Priority (HCP)

The first part of the method, the Highway Corridor Priority (HCP), categorizes our highway assets into six levels of priorities.

Highway Corridor Priority	Miles	% Miles	% Traffic	Example (click on thumbnail to view image)/th>
Priority 1	1884	8%	43%	The Interstate and all other National Hwy System corridors, such as Brewer-Calais Rte 9, Newport-Gilead Rte 2, Houlton-Madawaska Rte 1
Priority 2	1241	5%	17%	High-priority, non-NHS such as Caribou-Ft. Kent Rte 161, Bangor-Greenville Rte 15, Ellsworth-Eastport Rte 1, Farmington to Rangeley Rte 4
Priority 3	1291	5%	11%	China-Hampden Rte 202, Cornish-Fryburg Rte 5, Lincoln-Topsfield Rte 6, Baileyville to Houlton Rte 1
Priority 4	4625	20%	16%	Major/Minor Collectors not included above (including 3 miles of marine highway)
Priority 5	14465	62%	12%	Local Roads & Streets

 * Data based on 2024 asset inventory.

Customer Service Level (CSL)

The second part of the method is determining the Customer Service Level (CSL) that measures MaineDOT managed highway assets (Priority 1-5) in three areas. The CSL uses customer-focused engineering measures to track highway (1) Safety, (2) Condition and (3) Serviceability, and grades them similar to a report card (A – F). The information below lists the individual measures that make up the overall service level grade. To view this data in our map viewer, click on a header below.

CSL Mileage Summary Charts

Highway Corridor Priority and Customer Service levels are overlaid to show an aggregated state-wide view of the different priority roads with their corresponding service levels. Percentages do not reflect highway assets not managed by MaineDOT.

Current Highway CSL Miles by Priority

Updated for projects with Construction Complete Actual dates on or before Monday, June 07, 2021.

Condition

HCP A B C D F Total 1 442 343 443 157 109 1,494 7% 10% 30% 23% 30% 2 316 291 274 215 125 1,219 10% 18% 22% 24% 26% 3 488 366 220 125 43 1,242 3% 10% 18% 29% 39% 4 2,059 1,540 632 298 124 4,653 3% 6% 14% 33% 44% Total 3,304 2,539 1,569 794 401 8,608 5% 9% 18% 29% 38%

Safety

HCP A B C D F Total 1 208 569 367 244 126 1,513 8% 16% 24% 38% 14% 2 158 459 336 202 83 1,239 7% 16% 27% 37% 13% 3 347 428 288 129 62 1,255 5% 10% 23% 34% 28% 4 716 1,635 1,059 805 453 4,668 10% 17% 23% 35% 15% Total 1,429 3,092 2,049 1,381 724 8,675 8% 16% 24% 36% 16%

Service

HCP A B C D F Total 1 1,116 333 57 2 5 1,513 0% 0% 4% 22% 74% 2 947 223 54 9 6 1,239 1% 1% 4% 18% 76% 3 1,010 166 29 47 3 1,255 0% 4% 2% 13% 80% 4 2,201 78 2,188 200 1 4,668 0% 4% 47% 2% 47% Total 5,274 800 2,328 258 15 8,675 0% 3% 27% 9% 61%