Top Interior highway, street, and bridge construction contractors
In the 12 months ending Oct 5, 2026, the Department of the Interior obligated $191.3M in net prime contract dollars under NAICS 237310, up 121.7% from $86.3M in the preceding 12 months. 99 prime contractors received positive obligations, and 10 of them accounted for 80% of that spend.
Prime contracts funded by the Department of the Interior. Latest 12 months: Oct 6, 2025 to Oct 5, 2026. Source: USAspending.gov.
Obligations by fiscal year
Net prime contract obligations by federal fiscal year (October to September).
Top Interior contractors for NAICS 237310
Ranked by positive obligations in the latest 12 months. Share is of all positive obligations in this market.
| # | Contractor | Latest 12 mo | Prior 12 mo | Share | Rank change |
|---|---|---|---|---|---|
| 1 | W. W. Clyde & Co. | $62.4M | $0 | 32.6% | New |
| 2 | Classic Site Solutions Inc | $23.9M | $87K | 12.5% | ▲ 67 |
| 3 | Guardian Construction, Inc. | $11.9M | $3.5M | 6.2% | ▲ 4 |
| 4 | Bellingham Marine Industries Inc | $10.9M | $0 | 5.7% | New |
| 5 | MFS Construction LLC | $10.5M | $0 | 5.5% | New |
| 6 | E Corp | $9.4M | $0 | 4.9% | New |
| 7 | Yorkshire Industries LLC | $9.4M | $317K | 4.9% | ▲ 31 |
| 8 | Missouri River Contractors, LLC | $7.7M | $3.8M | 4.0% | ▼ 3 |
| 9 | Yerba Buena Engineering & Construction, Inc. | $5.1M | $0 | 2.7% | New |
| 10 | Central Environmental Inc | $4.2M | $9.9M | 2.2% | ▼ 8 |
| 11 | Blue Trident, LLC | $3.3M | $39K | 1.7% | ▲ 75 |
| 12 | Jackson Excavation, Inc | $2.5M | $0 | 1.3% | New |
| 13 | Advantage Paving & Excavating Inc | $2.0M | $0 | 1.0% | New |
| 14 | Giving Tree Capital, LLC | $2.0M | $0 | 1.0% | New |
| 15 | Puyenpa Construction, LLC | $1.9M | $0 | 1.0% | New |
What changed in the last 12 months
Contractors with the largest change in reported obligations versus the preceding 12 months.
Largest gains
- W. W. Clyde & Co.$0 → $62.4M (+$62.4M) · now #1
- Classic Site Solutions Inc$87K → $23.9M (+$23.8M) · now #2
- Bellingham Marine Industries Inc$0 → $10.9M (+$10.9M) · now #4
Largest declines
- RBA Engineering International, PLLC$15.5M → $930K (−$14.6M) · now #23
- Mckenzie Construction & Site Development LLC$9.3M → $182K (−$9.2M) · now #53
- John Cecil Construction, LLC$8.8M → $0 (−$8.8M) · no latest-period obligations
New to this market
40 contractors received their first obligations in this market (since FY2022) during the latest 12 months. The largest:
| Contractor | First obligation | Latest 12 mo |
|---|---|---|
| W. W. Clyde & Co. | Sep 25, 2026 | $62.4M |
| Bellingham Marine Industries Inc | Sep 24, 2026 | $10.9M |
| E Corp | Jun 26, 2026 | $9.4M |
| Jackson Excavation, Inc | Feb 9, 2026 | $2.5M |
| Advantage Paving & Excavating Inc | Sep 23, 2026 | $2.0M |
| Giving Tree Capital, LLC | Sep 9, 2026 | $2.0M |
| Puyenpa Construction, LLC | Mar 10, 2026 | $1.9M |
| H-K Contractors, Inc. | Jun 29, 2026 | $1.6M |
Where the money comes from
Funding sub-agencies within the Department of the Interior, latest 12 months. The funding organization can differ from the office that runs the requirement.
| Funding sub-agency | Latest 12 mo | Prior 12 mo | Change |
|---|---|---|---|
| National Park Service | $176.1M | $61.3M | Up $114.9M (187.4%) |
| Bureau of Land Management | $7.3M | $15.6M | Down $8.3M (53.1%) |
| U.S. Fish and Wildlife Service | $5.9M | $6.0M | Down $114K (1.9%) |
| Bureau of Indian Affairs and Bureau of Indian Education | $1.1M | $891K | Up $176K (19.7%) |
| Departmental Offices | $589K | $0 | New |
| U.S. Geological Survey | $187K | $172K | Up $14K (8.3%) |
Potential recompetes
Large awards in this market whose current period of performance ends in the next 18 months. Treat these as research leads: options, extensions, and follow-on vehicles often change the timing.
| Award | Incumbent | Obligated | Current end |
|---|---|---|---|
| 140P2024C0017 | DMS Contracting Inc OZAR 223690 - PAVEMENT PRESERVATION FOR 3 MISSOURI NATIONAL PARKS - N122 GWCA 318349 OZAR 223690 WICR 226956. THIS PAVEMENT PRESERVATIONS PROJECT IS COMPOSED OF 3 PARKS IN… | $15.3M | Oct 30, 2026 |
| 140P2025C0025 | John Cecil Construction, LLC REHABILITATE THE LINCOLN MEMORIAL BRIDGE - DESIGN BUILD PROGRAM OF REQUIREMENTS | $8.8M | Dec 2, 2026 |
| 140L0625C0001 | Central Environmental Inc GAOA NOME CREEK ROAD REPAIR | $9.9M | Jan 6, 2027 |
| 140P2026C0046 | MFS Construction LLC GATE 213019 JACOB RIIS PARKING LOT | $10.0M | Apr 19, 2027 |
| 140P2026C0026 | Missouri River Contractors, LLC YELL 338221 - BRIDGE PRESERVATION - 5 BRIDGES | $7.7M | May 24, 2027 |
| 140P2026C0044 | Yerba Buena Engineering & Construction, Inc. THE PROJECT ENTAILS ROADWAY AND PATHWAY IMPROVEMENTS INTENDED TO ACCOMMODATE CYCLISTS AND PEDESTRIANS IN AN AREA CONGESTED WITH VEHICLE TRAFFIC. THE PROJECT INCLUDES CONSTRUCTION… | $4.9M | Aug 25, 2027 |
| 140P2026C0008 | Bellingham Marine Industries Inc GLCA 210865 REPLACE WAHWEEP DOCK DB | $10.9M | Oct 29, 2027 |
| 140P1426C0005 | E Corp GRAND TETON NATIONAL PARK (GRTE), TAGGART LAKE AREA RENEWAL - PMIS 314711 | $8.3M | Nov 15, 2027 |
| 140P2026C0042 | Yorkshire Industries LLC N191 VOYA 335009 REHAB RAINY AND ASH PAVEMENT PRESERVATION PROJECT AT VOYAGEURS NATIONAL PARK IN MINNESOTA. | $7.3M | Dec 31, 2027 |
| 140P2026C0051 | Classic Site Solutions Inc DEWA 310424 325752 324741 - SAFETY AND PAVEMENT IMPROVEMENTS TO ROUTE 209 & MCDADE TRAIL - DELAWARE WATER GAP NATIONAL RECREATION AREA | $23.9M | Dec 31, 2027 |
Common questions
Who are the top Interior contractors for NAICS 237310?
In the latest 12 months, W. W. Clyde & Co. ($62.4M), Classic Site Solutions Inc ($23.9M), Guardian Construction, Inc. ($11.9M) received the most Interior obligations for highway, street, and bridge construction.
How concentrated is this market?
The eight largest primes held 76.3% of positive obligations, and W. W. Clyde & Co. alone held 32.6%. 40 contractors won their first obligations in this market during the latest 12 months.
Are any large Interior NAICS 237310 contracts ending soon?
10 of the largest awards in this market reach their current end date in the next 18 months. The first is 140P2024C0017 (DMS Contracting Inc, $15.3M obligated), ending Oct 30, 2026. An end date is a research lead, not a confirmed recompete: options and extensions often move it.
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$10.6MFigures are net obligations on prime contracts (award types A–D) from USAspending.gov, grouped by funding agency and the NAICS code on each award. Net obligations include deobligations and corrections, so they can differ from positive-obligation totals. See methodology.
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