Table 2: Number and Cost of 2013 Projects by Improvement Category
| Improvement Category | No. of Projects | Total Cost of Projects* | Average Total Cost* | Total HSIP Cost of Projects* | Average HSIP Cost* |
|---|---|---|---|---|---|
| Access management | 34 | $195,352,612.42 | $5,745,665.07 | $30,737,148.44 | $1,097,755.30 |
| Advanced technology and ITS | 21 | $7,835,018.00 | $391,750.90 | $6,755,822.66 | $321,705.84 |
| Alignment | 55 | $149,902,498.19 | $2,775,972.19 | $35,993,363.80 | $679,120.07 |
| Animal-related | 3 | $8,450,107.00 | $2,816,702.33 | $7,043,972.40 | $2,347,990.80 |
| Interchange design | 87 | $177,683,228.85 | $2,140,761.79 | $48,053,087.31 | $586,013.26 |
| Intersection geometry | 376 | $445,306,021.01 | $1,213,367.90 | $243,071,648.34 | $655,179.65 |
| Intersection traffic control | 420 | $279,443,365.54 | $666,929.27 | $190,167,790.03 | $475,419.48 |
| Lighting | 48 | $18,678,171.44 | $389,128.57 | $18,462,105.44 | $384,627.20 |
| Miscellaneous | 39 | $39,536,487.75 | $1,013,756.10 | $16,663,845.81 | $462,884.61 |
| Non-infrastructure | 109 | $42,545,671.00 | $393,941.00 | $44,806,151.00 | $443,625.00 |
| Parking | 0 | n/a | n/a | n/a | n/a |
| Pedestrians and bicyclists | 103 | $53,892,611.32 | $528,358.93 | $35,694,976.78 | $346,553.17 |
| Railroad grade crossings | 4 | $972,389.00 | $243,097.25 | $992,389.00 | $248,097.25 |
| Roadside | 225 | $195,970,161.86 | $894,840.92 | $166,283,887.36 | $766,285.20 |
| Roadway | 854 | $541,384,359.69 | $635,427.65 | $290,915,274.31 | $342,656.39 |
| Roadway delineation | 102 | $59,644,608.12 | $602,470.79 | $43,313,203.01 | $424,639.25 |
| Roadway signs and traffic control | 163 | $43,409,123.45 | $269,621.88 | $41,413,281.27 | $254,069.21 |
| Shoulder treatments | 179 | $411,469,681.42 | $2,298,713.30 | $211,374,731.00 | $1,180,864.42 |
| Speed management | 12 | $3,214,173.15 | $267,847.76 | $3,111,752.04 | $259,312.67 |
| Work Zone | 1 | $93,273.00 | $93,273.00 | $93,273.00 | $93,273.00 |
| Unknown | 457 | $416,019,421.66 | $912,323.29 | $26,054,849.35 | $234,728.37 |
| Total | 3292 | $3,093,063,463.87 | $950,834.14 | $1,458,742,072.10 | $504,580.45 |
* Not all states provided cost data for all projects in a given improvement category.
Table 3. Number and Cost of Projects by Subcategory for Intersection Geometry
| Subcategory | No. of Projects | Total Cost |
|---|---|---|
| Auxiliary lanes - add left-turn lane | 114 | $126,343,935 |
| Auxiliary lanes - add right-turn lane | 16 | $6,702,633 |
| Auxiliary lanes - other | 44 | $88,956 |
| Intersection geometrics - other | 141 | $176,292,446 |
| Intersection geometrics - modify skew angle | 35 | $15,305,107 |
| Intersection geometrics - realignment to improve offset | 15 | $23,366,776 |
| Blank (no subcategory indicated) | 11 | $8,338,568 |
| Total | 376 | $356,438,422 |
Table 4: Number and Cost of Projects by Subcategory for Intersection Traffic Control
| Subcategory | No. of Projects | Total Cost |
|---|---|---|
| Intersection flashers and signing | 35 | $4,924,215 |
| Intersection traffic control – other | 88 | $51,598,810 |
| Modify control to roundabout | 47 | $56,973,072 |
| Modify traffic signal – add additional signal heads | 12 | $12,050,242 |
| Modify traffic signal – other | 45 | $21,692,152 |
| Modify traffic signal – modernization/replacement | 77 | $60,115,452 |
| Modify traffic signal – modify signal mounting | 14 | $15,604,417 |
| Modify traffic signal timing or phasing | 15 | $21,663,179 |
| Pavement markings | 48 | $9,248,702 |
| Systemic improvements – signal-controlled | 31 | $23,105,395 |
| Blank (no subcategory indicated) | 8 | $2,467,729 |
| Total | 420 | $279,443,366 |
Table 5: Number and Cost of Projects by Subcategory for Pedestrians and Bicyclists
| Subcategory | No. of Projects | Total Cost |
|---|---|---|
| Install or modify crosswalk | 11 | $6,110,617 |
| Install sidewalk | 33 | $10,619,125 |
| Miscellaneous pedestrian and bicyclist improvements | 29 | $22,545,047 |
| Install or modify pedestrian signal | 30 | $14,617,823 |
| Total | 103 | $53,892,611 |
Table 6: Number and Cost of Projects by Subcategory for Roadway
| Subcategory | No. of Projects | Total Cost |
|---|---|---|
| Pavement surface – high friction surface | 21 | $9,761,102 |
| Pavement surface – miscellaneous | 100 | $38,737,373 |
| Roadway widening – add or widen lanes | 24 | $126,677,292 |
| Roadway narrowing (road diet, roadway reconfiguration) | 3 | $337,903 |
| Rumble strips – center | 11 | $3,962,583 |
| Rumble strips – edge or shoulder | 66 | $143,286,118 |
| Rumble strips – unspecified or other | 4 | $818,892 |
| Roadway – other | 595 | $194,671,135 |
| Blank (no subcategory indicated) | 30 | $23,131,961 |
| Total | 854 | $541,384,360 |
Table 7. Number and Cost of Projects by Subcategory for Non-Infrastructure
| Subcategory | No. of Projects | Total Cost |
|---|---|---|
| Data/traffic records | 5 | $581,791 |
| Educational efforts | 5 | $1,226,474 |
| Enforcement | 2 | $2,895,444 |
| Non-infrastructure – other | 31 | $13,143,650 |
| Road safety audits | 9 | $2,649,500 |
| Transportation safety planning | 10 | $4,112,108 |
| Blank (no subcategory indicated) | 45 | $20,197,184 |
| Total | 109 | $44,806,151 |
* There were two additional projects labeled as "Outreach" and "Training and workforce development" that did not have a cost indicated.