Martin Marietta Materials, Inc.
Spec Agg Asphalt Plant
19701 West Colfax Avenue, Golden, CO 80401
- Outside contractor sales confirmed
- Hot mix (HMA)
- Checked Oct 24, 2026
Before you haul
What to settle with the plant before trucks leave the yard.
- Outside sales
- Sells to outside contractors
- Current hours
- Mon to Fri, 7:00 AM to 4:00 PMPosted — confirm today’s loadout
- Account
- Confirm with plantAsk what a first order needs
- Mix availability
- Call plantName the mix and tonnage
- Production schedule
- Call plantChanges day to day
- Minimum order
- Confirm with plant
- Payment methods
- Confirm with plant
- Saturday
- Not in posted hoursAsk about Saturday runs
- Truck access
- See site and truck accessAccess notes on file
Production schedules, mix inventory and loadout conditions change day to day. Confirm the mix designation, tonnage and loadout time with the plant before you dispatch trucks.
Plant details
Plant
- Operator
- Martin Marietta Materials, Inc.
- Plant type
- Fixed · hot mix asphalt
- County
- Jefferson County
- State DOT
- Not yet checked against a DOT list
- Address
- 19701 West Colfax Avenue, Golden, CO 80401
- GPS coordinates
- 39.70800, -105.20700
- Website
- martinmarietta.com
- Plant page
- The operator’s page for this plant
- EPA air permits
- CO0000000805900021, CO0000000805901191, CO0000000877704378
- Details checked
- October 24, 2026
Ordering and sales
- Plant phone
- (303) 657-4200
- Sales department
- On the plant line
- Outside sales
- Sells to outside contractors
Ask for your mix by name, the day’s loading hours, the minimum load, and what a first-time account needs.
Operations
- Plant hours
- Mon to Fri, 7:00 AM to 4:00 PM
- Seasonal schedule
- Martin Marietta posts these hours on its Golden plant page. Call ahead to confirm production days, holiday closures and the last-load time.
Mixes and products
- HMA · listed
- RHMA · not listed, ask
- Warm mix · not listed, ask
- RAP · not listed, ask
- DOT spec · not listed, ask
Hot mix asphalt (HMA)
- Hot Mix Asphalt (HMA)
The operator’s own list, sorted into families by The Pavement Directory. Mix designs and production schedules change: confirm the exact mix designation and tonnage availability with the plant before dispatching trucks.
Price per ton
No price on file for Spec Agg Asphalt Plant yet. Plant prices move with the liquid asphalt index and the quantity, so call for today's price — and if you have been quoted or bought here recently, you can add the price below.
Report a price you were quoted or paid
Site and truck access
Google satellite imagery centred on the plant’s coordinates. Zoom out to see the roads in.
- Gate address
- 19701 West Colfax Avenue, Golden, CO 80401
- GPS
- 39.70800, -105.20700
Truck access notes
Active asphalt plant with heavy truck traffic. Call (303) 657-4200 before arrival to confirm order status, mix availability, check-in procedure and last-load time.
Nearby asphalt plants
The nearest 10 within a 30 min drive of Spec Agg Asphalt Plant, by road with typical traffic.
Route to 1. Asphalt Paving Company — 13 min (9.6 mi) by road, typical traffic.
| Map number# | Plant | Drive | Road miles | Outside sales |
|---|---|---|---|---|
| 1 | Asphalt Paving CompanyGolden, CO · permit record, not yet reviewed9.6 mi by road · Outside sales: UnconfirmedDirections from Spec Agg Asphalt Plant to Asphalt Paving Company | 13 min | 9.6 mi | Unconfirmed |
| 2 | Asphalt Paving CoGolden, CO · permit record, not yet reviewed9.4 mi by road · Outside sales: UnconfirmedDirections from Spec Agg Asphalt Plant to Asphalt Paving Co | 15 min | 9.4 mi | Unconfirmed |
| 3 | Ralston Asphalt PlantAPC Construction · Golden, CO11 mi by road · Outside sales: UnconfirmedDirections from Spec Agg Asphalt Plant to Ralston Asphalt Plant | 16 min | 11 mi | Unconfirmed |
| 4 | Gordon Pecos Asphalt PlantMartin Marietta Materials, Inc. · Denver, CO15 mi by road · Outside sales: YesDirections from Spec Agg Asphalt Plant to Gordon Pecos Asphalt Plant | 18 min | 15 mi | Yes |
| 5 | Aggregate Industries - Wcr IncWestminster, CO · permit record, not yet reviewed16 mi by road · Outside sales: UnconfirmedDirections from Spec Agg Asphalt Plant to Aggregate Industries - Wcr Inc | 18 min | 16 mi | Unconfirmed |
| 6 | Asphalt Specialties - 62ND AveNorth Washington, CO · permit record, not yet reviewed16 mi by road · Outside sales: UnconfirmedDirections from Spec Agg Asphalt Plant to Asphalt Specialties - 62ND Ave | 19 min | 16 mi | Unconfirmed |
| 7 | Asphalt Specialties- AS-3 Asphalt PlantIdaho Springs, 2.8 Mi E Of, CO · permit record, not yet reviewed15 mi by road · Outside sales: UnconfirmedDirections from Spec Agg Asphalt Plant to Asphalt Specialties- AS-3 Asphalt Plant | 20 min | 15 mi | Unconfirmed |
| 8 | Brannan Sand & Gravel Co - 5880 Lipan StDenver Area, CO · permit record, not yet reviewed16 mi by road · Outside sales: UnconfirmedDirections from Spec Agg Asphalt Plant to Brannan Sand & Gravel Co - 5880 Lipan St | 20 min | 16 mi | Unconfirmed |
| 9 | Lafarge Gordon AsphaltDenver, CO · permit record, not yet reviewed16 mi by road · Outside sales: UnconfirmedDirections from Spec Agg Asphalt Plant to Lafarge Gordon Asphalt | 20 min | 16 mi | Unconfirmed |
| 10 | Asphalt Specialties Co Inc - 6555 HuronDenver, CO · permit record, not yet reviewed16 mi by road · Outside sales: UnconfirmedDirections from Spec Agg Asphalt Plant to Asphalt Specialties Co Inc - 6555 Huron | 21 min | 16 mi | Unconfirmed |
Drive time and miles by road from Google, with typical traffic for the route. Rush hour, a plant queue and a loaded truck all add time, so allow for them before you commit trucks.
Plant intelligence
About Spec Agg Asphalt Plant
Spec Agg Asphalt Plant is a Martin Marietta hot mix asphalt plant on West Colfax Avenue in Golden. Martin Marietta sells the plant's hot mix to paving contractors and lists (303) 657-4200 as the Metro A&P dispatch line for orders. Call ahead to confirm mixes, pricing, account setup and loadout times.
Areas served: Golden · Lakewood · Arvada · Wheat Ridge · Jefferson County
More Martin Marietta Materials, Inc. plants
- Gordon Pecos Asphalt PlantDenver, CO · 18 min (15 mi) by road
- Monaghan Asphalt PlantAurora, CO · 40 min (34 mi) by road
- HWY 34 Asphalt PlantJohnstown, CO · 1 hr 4 min (61 mi) by road
- Greeley Asphalt PlantGreeley, CO · 1 hr 17 min (73 mi) by road
- HWY 85/87 Asphalt PlantColorado Springs, CO · 1 hr 24 min (89 mi) by road
- Capital Asphalt PlantColorado Springs, CO · 1 hr 26 min (84 mi) by road
Plan the haul
- How to use this directoryWhat to know before you call a plant.
- Asphalt tonnage calculatorTons to order before you call.
- Trucking calculatorCycle times and trucks for this haul.
- Haul PlannerRank plants by delivered cost for a job.
- Asphalt price per tonPlant price, trucking and delivered cost.
- Asphalt plants near GoldenEvery plant within a haul of your site.
Who lays the mix
Need the work done rather than the mix? Compare paving and pavement maintenance contractors serving the area.
Spec Agg Asphalt Plant: common questions
Does Spec Agg Asphalt Plant sell asphalt to outside contractors?
Yes. Spec Agg Asphalt Plant sells hot mix to outside contractors. Call (303) 657-4200 to confirm account, pickup and delivery terms before your first order.
How do I order asphalt from Spec Agg Asphalt Plant?
Call the sales department at (303) 657-4200. Have the mix, tonnage and pickup date ready, and ask what a first-time account needs.
What are Spec Agg Asphalt Plant's hours?
Mon to Fri, 7:00 AM to 4:00 PM. Martin Marietta posts these hours on its Golden plant page. Call ahead to confirm production days, holiday closures and the last-load time.
What asphalt mixes does Spec Agg Asphalt Plant make?
Spec Agg Asphalt Plant lists Hot Mix Asphalt (HMA). What runs on a given day depends on the plant's schedule, so confirm your mix when you order.
What areas does Spec Agg Asphalt Plant serve?
Spec Agg Asphalt Plant serves Golden, Lakewood, Arvada, Wheat Ridge and Jefferson County. Haul time still decides whether it can supply a given job, so measure from the site before you order.
Where is Spec Agg Asphalt Plant?
19701 West Colfax Avenue, Golden, CO 80401, in Jefferson County.
What other asphalt plants are near Golden?
The closest by road in this directory are Asphalt Paving Company in Golden (13 min (9.6 mi) by road), Asphalt Paving Co in Golden (15 min (9.4 mi) by road) and Ralston Asphalt Plant in Golden (16 min (11 mi) by road), driving from Spec Agg Asphalt Plant with typical traffic. Call ahead before you switch plants: the nearest one only helps if it will load your trucks.
Who operates Spec Agg Asphalt Plant?
Martin Marietta Materials, Inc. operates Spec Agg Asphalt Plant.
Verified sources and corrections
Details checked October 24, 2026
Someone at The Pavement Directory checked this plant’s phone, hours and outside-sales policy against the operator on that date. It is not an endorsement of the plant or its mix.
Sources on this record
- Operator’s page for this plant — martinmarietta.com
- Operator website — martinmarietta.com
- EPA facility registry — Air permits CO0000000805900021, CO0000000805901191, CO0000000877704378
Record last updated October 24, 2026.
Suggest an edit
Run this plant, buy from it, or found a detail that is wrong or missing? Tell us and we will check it with the plant before the page changes. Prefer to write to us? Use the contact form.
Confirm before you haul: Hours, mix availability, sales policy and DOT approvals change, sometimes week to week. Call the plant before you schedule trucks. The Pavement Directory is an independent directory and is not affiliated with Martin Marietta Materials, Inc..