NAICS Code 237310: Highway, Street, and Bridge Construction
National industry
SBA small business size standard: $45 million in average annual receipts
Definition
This industry comprises establishments primarily engaged in the construction of highways (including elevated), streets, roads, airport runways, public sidewalks, or bridges. The work performed may include new work, reconstruction, rehabilitation, and repairs. Specialty trade contractors are included in this industry if they are engaged in activities primarily related to highway, street, and bridge construction (e.g., installing guardrails on highways).
Government contracts for this service: PSC Y1LB Construction of Highways, Roads, Streets, Bridges, and Railways
Code facts
- Part of
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23
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237
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2373
- 23731
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2373
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237
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23
- Contract awards
- 1,195 In the last 12 months
- Contract obligations
- $1,161,297,683 In FY2025
NAICS codes and definitions come from the U.S. Census Bureau, size standards from the SBA and contract spending from SAM.gov/FPDS.
Business activities under NAICS 237310
- Abutment construction
- Airport runway construction
- Airport runway line painting (e.g., striping)
- Asphalt paving (i.e., highway, road, street, public sidewalk)
- Bridge approach construction
- Bridge construction
- Bridge decking construction
- Causeway construction
- Concrete paving (i.e., highway, road, street, public sidewalk)
- Construction management, highway, road, street and bridge
- Culverts, highway, road and street, construction
- Curbs and street gutters, highway, road and street, construction
- Elevated highway construction
- Grading, highway, road, street and airport runway
- Guardrail construction
- Highway construction
- Highway line painting
- Logging road construction
- Oil field road construction
- Overpass construction
- Painting lines on highways, streets and bridges
- Painting traffic lanes or parking lots
- Parking lot marking and line painting
- Parkway construction
- Pavement, highway, road, street, bridge or airport runway, construction
- Pothole filling, highway, road, street or bridge
- Repair, highway, road, street, bridge or airport runway
- Resurfacing, highway, road, street, bridge or airport runway
- Road construction
- Runway, airport, line painting (e.g., striping)
- Sidewalk, public, construction
- Sign erection, highway, roads street or bridge
- Street construction
- Surfacing, highway, road, street, bridge or airport runway
- Tarring roads
- Traffic lane painting
- Trestle construction
- Underpass construction
Show all 38
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Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | -$70,165 |
| FY2026 | $2,273,261,466 |
| FY2025 | $1,161,297,683 |
| FY2024 | $2,577,553,471 |
| FY2023 | $2,797,004,166 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Kiewit Infrastructure South Co | $296,600,177 | |
| 2 | Amrize Southwest Inc. | $96,373,162 | |
| 3 | Bfbc LLC | $83,917,861 | |
| 4 | Alberici Constructors Inc. | $63,796,002 | |
| 5 | W.w. Clyde & CO. | $62,876,108 | |
| 6 | Slsco, LTD. | $59,785,544 | |
| 7 | Eclipse Companies, LLC | $57,759,818 | |
| 8 | Ddd-Dvg Joint Venture LLC | $36,763,598 | |
| 9 | Strider Construction Co Inc. | $36,717,586 | |
| 10 | Granite Construction Company | $35,942,384 |
See the full FY2025 ranking of NAICS 237310 contractors, by parent company.
Top funding agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of Transportation | $760,732,528 | |
| 2 | Department of Agriculture | $539,240,904 | |
| 3 | Department of the Army | $363,450,160 | |
| 4 | Department of the Interior | $190,979,067 | |
| 5 | Air Force | $172,707,717 | |
| 6 | Department of the Navy | $144,775,220 | |
| 7 | Department of Veterans Affairs | $38,640,821 | |
| 8 | General Services Administration | $27,038,614 | |
| 9 | Department of Homeland Security | $10,507,133 | |
| 10 | Department of Health and Human Services | $6,939,826 |
Top PSC codes by obligations
| Rank | PSC code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Y1LB Construction of Highways, Roads, Streets, Bridges, and Railways | $1,110,051,141 | |
| 2 |
Z2LB Repair or Alteration of Highways/ |
$553,426,826 | |
| 3 | Y1BD Construction of Airport Runways and Taxiways | $138,774,430 | |
| 4 |
Z1LB Maintenance of Highways/ |
$107,412,407 | |
| 5 | Z2QA Repair or Alteration of Restoration of Real Property (Public or Private) | $105,402,284 | |
| 6 | Y1PZ Construction of Other Non-Building Facilities | $78,340,720 | |
| 7 | Z2BD Repair or Alteration of Airport Runways and Taxiways | $22,452,120 | |
| 8 | Z2LZ Repair or Alteration of Parking Facilities | $19,905,195 | |
| 9 | Y1PA Construction of Recreation Facilities (Non-Building) | $18,606,919 | |
| 10 | Y1BZ Construction of Other Airfield Structures | $17,822,861 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | California | $233,597,575 | |
| 2 | North Carolina | $142,768,873 | |
| 3 | New Mexico | $111,594,716 | |
| 4 | Texas | $107,375,286 | |
| 5 | Arizona | $103,163,488 | |
| 6 | Montana | $95,106,626 | |
| 7 | Virginia | $84,830,648 | |
| 8 | Oklahoma | $81,956,784 | |
| 9 | Puerto Rico | $80,619,466 | |
| 10 | Oregon | $63,760,766 | |
| 11 | Wyoming | $63,273,260 | |
| 12 | Washington | $61,349,732 | |
| 13 | Alaska | $54,905,710 | |
| 14 | Tennessee | $48,854,055 | |
| 15 | South Carolina | $45,749,849 | |
| 16 | Florida | $44,120,299 | |
| 17 | Idaho | $43,118,347 | |
| 18 | Illinois | $40,009,124 | |
| 19 | West Virginia | $39,622,102 | |
| 20 | Colorado | $37,663,402 | |
| 21 | Utah | $36,470,407 | |
| 22 | Nevada | $34,076,557 | |
| 23 | Maryland | $29,506,849 | |
| 24 | Pennsylvania | $28,698,437 | |
| 25 | New Jersey | $24,525,232 | |
| 26 | New York | $22,695,289 | |
| 27 | Georgia | $21,067,771 | |
| 28 | Kentucky | $20,992,797 | |
| 29 | Hawaii | $18,183,739 | |
| 30 | Louisiana | $16,516,655 | |
| 31 | Missouri | $9,401,374 | |
| 32 | North Dakota | $8,502,239 | |
| 33 | Arkansas | $7,854,036 | |
| 34 | Massachusetts | $6,684,449 | |
| 35 | Indiana | $6,300,742 | |
| 36 | Minnesota | $6,249,493 | |
| 37 | Alabama | $6,185,915 | |
| 38 | District of Columbia | $6,123,792 | |
| 39 | Michigan | $5,645,435 | |
| 40 | Kansas | $5,197,367 | |
| 41 | South Dakota | $4,238,752 | |
| 42 | Wisconsin | $3,250,871 | |
| 43 | Mississippi | $2,541,611 | |
| 44 | Ohio | $2,365,734 | |
| 45 | New Hampshire | $2,291,038 | |
| 46 | Delaware | $1,209,882 | |
| 47 | U.S. Virgin Islands | $1,097,094 | |
| 48 | Maine | $855,459 | |
| 49 | Nebraska | $459,638 | |
| 50 | Vermont | $365,836 | |
| 51 | Rhode Island | $276,033 | |
| 52 | Guam | $9,732 |
Show all 52
Shares are of everything obligated under NAICS 237310 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Contract opportunities
Show 40 more
Latest 50 of 22,209 listed here. See the rest on GovTribe.
Size standard history
Federal Register rules that named this code
From the NAICS codes each rule's amendments to 13 CFR 121.201 name. Rules that print their size standard tables as images aren't listed.
Quick answers
What is NAICS 237310?
NAICS 237310 is Highway, Street, and Bridge Construction, a national industry in NAICS 23, Construction.
What is the NAICS code for tarring roads?
The NAICS code for tarring roads is 237310, Highway, Street, and Bridge Construction.
What is the NAICS code for road construction?
The NAICS code for road construction is 237310, Highway, Street, and Bridge Construction.
What is the NAICS code for bridge construction?
The NAICS code for bridge construction is 237310, Highway, Street, and Bridge Construction.
When did the size standard for NAICS 237310 last change?
The most recent Federal Register rule on record that names NAICS 237310 in the SBA's size standards is "Small Business Size Standards: Adjustment of Monetary-Based Size Standards, Disadvantage Thresholds, and 8(a) Eligibility Thresholds for Inflation" (87 FR 69118), published Nov 17, 2022 and effective Dec 19, 2022.
How much do federal agencies spend under NAICS 237310?
Federal contracts under NAICS 237310 obligated $1,161,297,683 in fiscal year 2025 and $8,809,046,620 in fiscal years 2023 through 2027.
Who are the largest contractors under NAICS 237310?
The contractors with the most obligated under NAICS 237310 in fiscal years 2026 and 2027 are Kiewit Infrastructure South Co ($296,600,177), Amrize Southwest Inc. ($96,373,162) and Bfbc LLC ($83,917,861).
Which agencies buy the most under NAICS 237310?
The agencies that obligated the most under NAICS 237310 in fiscal years 2026 and 2027 are Department of Transportation ($760,732,528), Department of Agriculture ($539,240,904) and Department of the Army ($363,450,160).
Which PSC codes are used with NAICS 237310?
The PSC codes with the most obligated under NAICS 237310 in fiscal years 2026 and 2027 are Y1LB Construction of Highways, Roads, Streets, Bridges, and Railways; Z2LB Repair or Alteration of Highways/
Where is the work under NAICS 237310 performed?
By place of performance, the states with the most contract obligations under NAICS 237310 over the last 12 months are California ($233,597,575), North Carolina ($142,768,873) and New Mexico ($111,594,716).
What is the latest contract opportunity under NAICS 237310?
The latest contract opportunity under NAICS 237310 is SAS4408 Pedestrian Bridge Replacement, solicitation from Naval Facilities Engineering Command (Navy), posted November 6, 2026.
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