NAICS 23731: Highway, Street, and Bridge Construction
NAICS industry
Code facts
- Part of
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23
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237
- 2373
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237
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23
- Codes under it
- 1
- Contract awards
- 1,168 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.
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $668,632 |
| FY2026 | $2,259,183,139 |
| FY2025 | $1,161,297,683 |
| FY2024 | $2,577,553,471 |
| FY2023 | $2,796,994,416 |
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 | $86,355,167 | |
| 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 23731 contractors, by parent company.
Top funding agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of Transportation | $762,337,864 | |
| 2 | Department of Agriculture | $537,381,577 | |
| 3 | Department of the Army | $359,654,060 | |
| 4 | Department of the Interior | $190,949,726 | |
| 5 | Air Force | $166,411,101 | |
| 6 | Department of the Navy | $142,929,266 | |
| 7 | Department of Veterans Affairs | $38,266,322 | |
| 8 | General Services Administration | $27,038,614 | |
| 9 | Department of Homeland Security | $10,507,133 | |
| 10 | Department of Health and Human Services | $6,932,739 |
Top PSC codes by obligations
| Rank | PSC code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Y1LB Construction of Highways, Roads, Streets, Bridges, and Railways | $1,108,341,913 | |
| 2 |
Z2LB Repair or Alteration of Highways/ |
$548,573,871 | |
| 3 | Y1BD Construction of Airport Runways and Taxiways | $137,742,892 | |
| 4 | Z2QA Repair or Alteration of Restoration of Real Property (Public or Private) | $105,393,732 | |
| 5 |
Z1LB Maintenance of Highways/ |
$104,160,337 | |
| 6 | Y1PZ Construction of Other Non-Building Facilities | $80,778,026 | |
| 7 | Z2BD Repair or Alteration of Airport Runways and Taxiways | $21,070,389 | |
| 8 | Z2LZ Repair or Alteration of Parking Facilities | $19,890,926 | |
| 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 | Virginia | $325,162,505 | |
| 2 | California | $232,253,340 | |
| 3 | North Carolina | $141,876,153 | |
| 4 | New Mexico | $115,395,797 | |
| 5 | Texas | $107,157,001 | |
| 6 | Arizona | $101,839,963 | |
| 7 | Montana | $97,284,987 | |
| 8 | Oklahoma | $81,356,560 | |
| 9 | Puerto Rico | $80,615,238 | |
| 10 | Oregon | $69,787,728 | |
| 11 | Wyoming | $63,758,057 | |
| 12 | Washington | $60,678,753 | |
| 13 | Alaska | $54,129,228 | |
| 14 | Tennessee | $51,979,028 | |
| 15 | South Carolina | $45,749,849 | |
| 16 | Florida | $44,325,291 | |
| 17 | Idaho | $43,079,857 | |
| 18 | Illinois | $39,988,049 | |
| 19 | West Virginia | $39,622,102 | |
| 20 | Utah | $38,455,354 | |
| 21 | Nevada | $34,114,636 | |
| 22 | Colorado | $33,827,653 | |
| 23 | Maryland | $29,512,949 | |
| 24 | Pennsylvania | $28,135,918 | |
| 25 | New York | $22,695,289 | |
| 26 | New Jersey | $21,797,468 | |
| 27 | Georgia | $21,067,771 | |
| 28 | Kentucky | $20,832,030 | |
| 29 | Hawaii | $20,547,239 | |
| 30 | Louisiana | $16,448,977 | |
| 31 | Arkansas | $8,559,652 | |
| 32 | North Dakota | $8,490,939 | |
| 33 | Missouri | $7,627,660 | |
| 34 | Indiana | $6,300,742 | |
| 35 | Minnesota | $6,249,493 | |
| 36 | Alabama | $6,185,915 | |
| 37 | District of Columbia | $6,123,792 | |
| 38 | Massachusetts | $5,681,580 | |
| 39 | Michigan | $5,645,435 | |
| 40 | Kansas | $4,981,485 | |
| 41 | South Dakota | $4,203,166 | |
| 42 | Wisconsin | $3,250,871 | |
| 43 | Mississippi | $2,541,611 | |
| 44 | Ohio | $2,365,734 | |
| 45 | New Hampshire | $2,280,684 | |
| 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 | $183,209 | |
| 52 | Guam | $9,732 |
Show all 52
Shares are of everything obligated under NAICS 23731 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 22,202 listed here. See the rest on GovTribe.
Codes under 23731
| NAICS code | Size standard |
|---|---|
| 237310 Highway, Street, and Bridge Construction | $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).
Illustrative examples
- 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
Quick answers
What is NAICS 23731?
NAICS 23731 is Highway, Street, and Bridge Construction, a NAICS 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. Its SBA small business size standard is $45 million in average annual receipts.
What is the NAICS code for road construction?
The NAICS code for road construction is 237310, Highway, Street, and Bridge Construction. Its SBA small business size standard is $45 million in average annual receipts.
What is the NAICS code for bridge construction?
The NAICS code for bridge construction is 237310, Highway, Street, and Bridge Construction. Its SBA small business size standard is $45 million in average annual receipts.
What codes are under NAICS 23731?
NAICS 23731 has one code under it with its own GovTribe page, 237310 Highway, Street, and Bridge Construction.
How much do federal agencies spend under NAICS 23731?
Federal contracts under NAICS 23731 obligated $1,161,297,683 in fiscal year 2025 and $8,795,697,340 in fiscal years 2023 through 2027.
Who are the largest contractors under NAICS 23731?
The contractors with the most obligated under NAICS 23731 in fiscal years 2026 and 2027 are Kiewit Infrastructure South Co ($296,600,177), Amrize Southwest Inc. ($96,373,162) and Bfbc LLC ($86,355,167).
Which agencies buy the most under NAICS 23731?
The agencies that obligated the most under NAICS 23731 in fiscal years 2026 and 2027 are Department of Transportation ($762,337,864), Department of Agriculture ($537,381,577) and Department of the Army ($359,654,060).
Which PSC codes are used with NAICS 23731?
The PSC codes with the most obligated under NAICS 23731 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 23731 performed?
By place of performance, the states with the most contract obligations under NAICS 23731 over the last 12 months are Virginia ($325,162,505), California ($232,253,340) and North Carolina ($141,876,153).
What is the latest contract opportunity under NAICS 23731?
The latest contract opportunity under NAICS 23731 is Northeast Region Pavement and Bridge Preservation Construction - NP NER PMS BMS FY25(2), pre-solicitation from Federal Highway Administration, posted October 22, 2026.
On GovTribe
See everything under NAICS 23731
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