Maintenance of Highways, Roads, Streets, Bridges and Railways Government Contracts
PSC Z1LB
Maintenance of Highways/
Code facts
- Spend category
- Facilities & Construction Facility Related Services
- Part of
-
-
Z
- Z1
-
Z
- Contract obligations
- $247,115,311 In FY2025
PSC codes and definitions come from the GSA PSC Manual and contract spending from SAM.gov/FPDS.
Market summary
Top buying agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of Agriculture | $114,311,813 | |
| 2 | Department of Homeland Security | $44,778,448 | |
| 3 | Department of the Army | $31,066,176 | |
| 4 | Department of the Navy | $28,136,669 | |
| 5 | Department of the Interior | $12,318,075 | |
| 6 | Air Force | $6,239,044 | |
| 7 | Department of Veterans Affairs | $2,393,977 | |
| 8 | Department of Energy | $1,626,625 | |
| 9 | Department of Transportation | $1,626,369 | |
| 10 | Environmental Protection Agency | $1,135,542 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Mckenzie Construction & Site Development LLC | $43,855,512 | |
| 2 | Union Paving & Construction Co | $17,154,700 | |
| 3 | Tims 8A JV LLC | $15,315,621 | |
| 4 | Koman Advantage, LLC | $13,505,428 | |
| 5 | Columbus Barricades, Inc. | $9,711,158 | |
| 6 | FDT Water Infrastructure, LLC | $7,984,209 | |
| 7 | NH1 JV | $7,829,423 | |
| 8 | Mccalls Grading & Construction Inc. | $6,150,841 | |
| 9 | Judd Buick Construction, Inc. | $4,754,721 | |
| 10 | David Industrial Services, LLC | $4,665,000 |
See the full FY2025 ranking of PSC Z1LB contractors, by parent company.
Open contract opportunities
Recent contract awards
Latest 10 of 299 awarded in the last 12 months listed here. See the rest on GovTribe.
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $2,310,963 |
| FY2026 | $242,552,679 |
| FY2025 | $247,115,311 |
| FY2024 | $262,231,735 |
| FY2023 | $355,098,205 |
Top NAICS codes by obligations
| Rank | NAICS code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | 237310 Highway, Street, and Bridge Construction | $107,412,407 | |
| 2 | 236220 Commercial and Institutional Building Construction | $58,163,211 | |
| 3 | 237990 Other Heavy and Civil Engineering Construction | $58,059,252 | |
| 4 | 115310 Support Activities for Forestry | $5,288,819 | |
| 5 | 561210 Facilities Support Services | $5,173,769 | |
| 6 | 488210 Support Activities for Rail Transportation | $2,793,395 | |
| 7 | 238990 All Other Specialty Trade Contractors | $2,779,233 | |
| 8 | 237110 Water and Sewer Line and Related Structures Construction | $1,279,365 | |
| 9 | 488490 Other Support Activities for Road Transportation | $961,952 | |
| 10 | 212321 Construction Sand and Gravel Mining | $808,444 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | Virginia | $43,759,039 | |
| 2 | Texas | $35,201,987 | |
| 3 | California | $22,877,479 | |
| 4 | Georgia | $21,235,905 | |
| 5 | New Jersey | $19,001,542 | |
| 6 | North Carolina | $16,718,323 | |
| 7 | Utah | $12,509,773 | |
| 8 | Arizona | $12,118,820 | |
| 9 | Washington | $5,689,729 | |
| 10 | Colorado | $5,564,042 | |
| 11 | Oregon | $5,315,355 | |
| 12 | Rhode Island | $5,030,993 | |
| 13 | Tennessee | $4,558,996 | |
| 14 | Wyoming | $3,226,222 | |
| 15 | Kentucky | $2,587,067 | |
| 16 | New Mexico | $2,585,823 | |
| 17 | Alaska | $2,308,905 | |
| 18 | Pennsylvania | $2,201,614 | |
| 19 | New York | $2,122,844 | |
| 20 | Arkansas | $2,107,707 | |
| 21 | South Carolina | $1,845,681 | |
| 22 | Florida | $1,720,220 | |
| 23 | Missouri | $1,639,418 | |
| 24 | Michigan | $1,387,393 | |
| 25 | Montana | $1,299,642 | |
| 26 | Minnesota | $988,756 | |
| 27 | Kansas | $964,341 | |
| 28 | Illinois | $917,756 | |
| 29 | Hawaii | $843,767 | |
| 30 | West Virginia | $740,234 | |
| 31 | Nevada | $631,375 | |
| 32 | Mississippi | $588,084 | |
| 33 | Guam | $498,144 | |
| 34 | Idaho | $484,412 | |
| 35 | Wisconsin | $480,960 | |
| 36 | Puerto Rico | $479,408 | |
| 37 | South Dakota | $467,117 | |
| 38 | Oklahoma | $383,676 | |
| 39 | Ohio | $238,200 | |
| 40 | Maine | $192,295 | |
| 41 | Iowa | $130,394 | |
| 42 | Vermont | $64,683 | |
| 43 | Massachusetts | $30,175 | |
| 44 | North Dakota | $18,000 |
Show all 44
Shares are of everything obligated under PSC Z1LB in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Definition
Includes: Resurfacing
Quick answers
What is PSC Z1LB?
PSC Z1LB is Maintenance of Highways/
How many government contracts for maintenance of highways, roads, streets, bridges and railways are there?
7 contract opportunities under PSC Z1LB are open now, and 72 notices were posted in the last 90 days. Federal agencies awarded 299 contracts under PSC Z1LB in the last 12 months, obligating $244,349,707.
How much do federal agencies spend under PSC Z1LB?
Federal contracts under PSC Z1LB obligated $247,115,311 in fiscal year 2025 and $1,109,308,893 in fiscal years 2023 through 2027.
Who are the largest contractors under PSC Z1LB?
The contractors with the most obligated under PSC Z1LB in fiscal years 2026 and 2027 are Mckenzie Construction & Site Development LLC ($43,855,512), Union Paving & Construction Co ($17,154,700) and Tims 8A JV LLC ($15,315,621).
Which agencies buy the most under PSC Z1LB?
The agencies that obligated the most under PSC Z1LB in fiscal years 2026 and 2027 are Department of Agriculture ($114,311,813), Department of Homeland Security ($44,778,448) and Department of the Army ($31,066,176).
Which NAICS codes are used with PSC Z1LB?
The NAICS codes with the most obligated under PSC Z1LB in fiscal years 2026 and 2027 are 237310 Highway, Street, and Bridge Construction; 236220 Commercial and Institutional Building Construction; and 237990 Other Heavy and Civil Engineering Construction.
Where is the work under PSC Z1LB performed?
By place of performance, the states with the most contract obligations under PSC Z1LB over the last 12 months are Virginia ($43,759,039), Texas ($35,201,987) and California ($22,877,479).
What is the latest open contract opportunity under PSC Z1LB?
The latest open contract opportunity under PSC Z1LB is SAS4408 Pedestrian Bridge Replacement, solicitation from Naval Facilities Engineering Command (Navy), posted November 6, 2026.
On GovTribe
See everything under PSC Z1LB
- Federal contract opportunities, awards and IDVs under this code
- Funding analysis by contractor, agency and set-aside
- Contacts who buy under this code
- Ask GovTribe AI about this code