2100 Series - Earthwork, Subgrades, & Subbases
2101 Clearing and Grubbing
2102 Roadway and Borrow Excavation
2104 Channel Excavation
2105 Stripping, Salvaging, & Spreading Topsoil
2107 Embankments
2108 Overhaul
2109 Natural Subgrade
2110 Soil Aggregate Subbase
2111 Granular Subbase
2113 Subgrade Stabilization Material
2114 Class A Subbase
2115 Modified Subbase
2121 Granular Shoulders
2122 Paved Shoulders
2123 Earth Shoulders for Pavement and Bases
2125 Reshaping Ditches
2126 Reclaiming Present Surfacing Material
2127 Reconstruction of Roadbed
2200 Series - Base Courses
2201 Portland Cement Concrete Base
2210 Macadam Stone Base
2212 Base Repair
2213 Base Widening
2214 Pavement Scarification
2216 Cracking and Seating of Concrete Pavement
2217 Rubbilizing Exisitng PCC Pavement
2300 Series - Surface Courses
2301 Portland Cement Concrete Pavement
2302 Portland Cement Concrete Pavement Widening
2303 Hot Mix Asphalt Mixture
2304 Detour Pavement
2306 Bituminous Fog Seal (Pavement)
2307 Bituminous Seal Coat
2308 Bituminous Fog Seal (Shoulders)
2309 Surface Recycling by Heater Scarifications
2310 Bonded Portland Cement Concrete Overlay
2312 Granular Surfacing
2314 Surface Application of Calcium Chloride
2315 Driveway Surfacing
2316 Pavement Smoothness
2318 Cold-In-Place ACConcrete Recycling
2319 Slurry Lev, Wedge, Strip Slurry Trtmnt
2399 Miscellaneous Pavement
2400 Series - Structures
2401 Removal of Existing Structures
2402 Excavation for Structures
2403 Structural Concrete
2404 Reinforcement
2405 Foundation and Substructures
2407 Precast & Prestressed Conc Bridge units
2408 Steel Structures
2409 Timber Structures
2410 Plank Floors
2411 Laminated Wood Floors
2412 New Concrete Floors on Bridge Decks
2413 Surfacing, Repair, Overlay - Bridge Floors
2414 Railings
2415 Concrete Box, Arch, and Circular Culverts
2416 Rigid Pipe Culverts
2417 Corrugated Culverts
2418 Pipe Culverts Installed by Jacking
2420 Struct Plate Pipes, Pipe Arches, Arches
2422 Unclassified Pipe Culverts
2423 Supp Struct-Signs, Luminaires, Trf Signals
2424 Shotcrete
2426 Structural Concrete Repair
2435 Sanitary and Storm Sewer Structures
2427 Bridge Cleaning
2499 Miscellaneous Bridge Work
2500 Series - Miscellaneous Construction
2501 Piles and Pile Driving
2502 Subdrains
2503 Storm Sewers
2504 Sanitary Sewers
2505 Removal and Construction of Guardrail
2506 Flowable Mortar
2507 Concrete and Stone Revetment
2508 Removal of Paint and Painting Steel Bridge Structure
2509 Crash Cushion
2510 Removal of Pavement
2511 Removal and Construction of PCC Sidewalks
2512 Portland Cement Concrete Curb and Gutter
2513 Concrete Barrier
2515 Removal and Constr of Paved Driveways
2516 Removal & Constr of Ret. Walls & Steps
2517 Concrete Header Slabs
2518 Safety Closure
2519 Fence Construction
2520 Field Laboratory and Field Office
2522 Tower Lighting
2523 Highway Lighting
2524 Highway Signing
2525 Traffic Signalization
2526 Construction Survey
2527 Pavement Marking
2528 Traffic Control
2529 Full Depth Finish Patches
2530 Partial Depth Finish Patches
2531 Pavement Surface Repair (Milling)
2532 Pavement Surface Repair (Diamond Grinding)
2533 Mobilization
2535 Bin Type Crib Wall
2536 Asbestos Removal
2537 Removal of Underground Tanks
2538 Salvage, Removal, and Disposal of Obstructions 
2539 Conc Pavmnt Undersealing-Pressure Grouting
2540 Longitudinal Joint Repair
2541 Crack and Joint Cleaning and Sealing (HMA Surfaces)
2542 Crack and Joint Cleaning and Sealing (PCC)
2543 Transverse Joint Repair of HMA Pavements
2544 Cleaning and Filling Cracks for HMA Surfaces
2545 Overlay of Type "B" Signs
2546 Gabions and Mattresses
2590 Quality Management
2594 Rest Areas
2595 Railroads
2598 Watermains
2599 Miscellaneous Construction
2600 Series - Roadside Development
2601 Erosion Control
2602 Water Pollution Control (Soil Erosion)
2610 Furnish and Install Shrubs, Trees, and Vines
2611 Furnish and Install Shrubs and Trees with Warranty
2612 Mowing
