At Gulf Branch Park, construction fence now runs through the woods, and deck matting covers the access paths to protect tree roots. Down in the channel, crews have set stone step pools and cross vanes where the stream used to cut deeper with every storm. Since early 2026, Arlington County's Gulf Branch Stream Resilience Project has worked through the park in sections. In its October update, the County says the next section is the one right by the Nature Center at 3608 N. Military Rd., with work likely to begin in late October or early November.
So November is when most visitors will first see the project up close. The building stays open, the program calendar is full, and the County still expects the work to run through early 2027. The same update reports a setback to that schedule that started outside the park, when pool draining sent water into the work site.
Three Work Zones, Three Different Stages
The County splits the project by the way crews get in, and each zone is at a different point:
- 37th St N, covering Reach 1, Reach 2 and the stormwater management practice. This work has mostly wrapped up, and the County expects to plant these areas later this fall.
- Broyhill Park. Work is underway. Crews are raising the stream bed so the sanitary sewer pipes can be safely re-buried, and they are installing stone step pools and cross vanes to stop the channel from eroding deeper.
- The Nature Center, reached from Military Road. This zone comes next, likely starting in late October or early November.
The finished sections have already been through a test. The County reports that several intense storms hit the Gulf Branch watershed this summer, and the new channel and its log and stone structures held up very well. Crews went back and reinforced a few spots. Some of the trees cleared for the work have stayed in the park. Several logs went back into the stream as habitat, and some trees were milled for lumber under the County's wood reuse effort. Once all the stream work is done, the replanting plan calls for native canopy trees, understory trees, shrubs and native plants matched to each spot along the corridor.
Where You Can Walk This Month
As the work moves toward the building, the trail crossings matter more. The Nature Center, the driveway from Military Road and most trails stay open. Here is how the four crossings the County tracks stand right now:
| Crossing | What it connects | Status |
|---|---|---|
| Trail crossing A | Nature Center to the northern and western parts of the park, at the base of Reach 2 | Open except during active construction nearby |
| Trail crossing B | Small pedestrian bridge from the park interior to the Old Glebe tennis courts | Open except during active construction nearby |
| Trail location C | 37th Street N to the park interior | Closed until stream work there is complete |
| Broyhill Park access | Broyhill Park entrance | Closed until stream work there is complete |
Crossing A is the one to watch. It links the Nature Center to the rest of the park, and active work near the building is exactly what can close it for a while. If it is closed, you can still reach the park from Old Glebe Park, Madison Community Center or the N. Dittmar Road area. The County asks visitors to stay off the deck matting and out of fenced areas. Construction gates may open during work hours for deliveries, and those openings are for trucks, not people on foot. The County has not given reopening dates for trail location C or the Broyhill Park access. To get monthly updates on closures and detours, use the project sign-up form.
A Request for Pool Owners in the Watershed
The County says unexpected pool draining incidents have flooded the stream project, forced work to stop and caused delays. The request it puts in bold at the top of its project update reads:
"If you will drain your pool in Gulf Branch watershed, especially upstream of Broyhill Park, please ask your contractor to wait until after 4pm to begin."
The same request asks every pool owner, in any watershed, to make sure the water is free of chlorine and to drain it slowly, and it links to the County's swimming pool guidelines.
The stoppages matter to anyone waiting for the park to fully reopen. Trail location C and the Broyhill Park access stay closed until the stream work in those areas is complete, and the County replants the corridor only after the stream work is finished.
Inside the Building, the Calendar Keeps Going
The County's Nature Center page says plainly that it is open during construction. Current hours are Tuesday through Thursday from 10 a.m. to 6 p.m., Friday and Saturday from 11 a.m. to 7 p.m., and Sunday from 1 to 5 p.m. It is closed Mondays. The park and trails are open daily from sunrise to sunset.
Here is what's on the schedule between this weekend and Thanksgiving week:
| Date | Program | Time | Cost |
|---|---|---|---|
| Fri., Oct. 30 | Magizoology | 6–7 p.m. | Free |
| Sat., Oct. 31 | Amazing Owl Adaptations | 11 a.m.–noon | Free |
| Tue., Nov. 3 | Backyard Weather Station | 1–2 p.m. | Free |
| Wed., Nov. 4 | Nature Storytime | 10:30–11 a.m. | Free |
| Thu., Nov. 5 | Tiny Tot: Moon | 10–10:45 a.m. | $8 |
| Thu., Nov. 5 | Pre-K: Trees | 11 a.m.–noon | $8 |
| Fri., Nov. 6 | Animals in the Fall Campfire | 5:30–6:30 p.m. | $8 |
| Thu., Nov. 12 | Pre-K: Trees | 1–2 p.m. | $8 |
| Fri., Nov. 20 | Turkeys Campfire | 5:30–6:30 p.m. | $8 |
| Sat., Nov. 21 and Tue., Nov. 24 | Tiny Tot: Moon | 10–10:45 a.m. | $8 |
| Sat., Nov. 21 and Tue., Nov. 24 | Pre-K: Trees | 11 a.m.–noon | $8 |
| Wed., Nov. 25 | Turkey Call Craft | 1–2 p.m. | $8 |
Every program needs registration. The County's nature program listings link each program number to online sign-up, and you can also register by phone at 703-228-4747. On Friday, Nov. 13, the County's nature events calendar lists a habitat day at Gulf Branch with invasive plant removal. It is a chance to help the park ahead of the replanting.
The building also has things to see that were missing for years. In June, ARLnow reported that the "Native American Tools" and "From the Earth" exhibits, with arrowheads, pottery and more, were back on the lower level six years after they were taken down for rehabilitation in 2020. The same report said "From the Wild" and "From the Water" were expected to follow in July. A replica dugout canoe stayed on display the whole time. The rest of the center is still there too. County materials list live animals, a vernal pond, pollinator gardens, a restored 19th-century log cabin and a campfire ring, plus wooded trails that follow Gulf Branch down to the Potomac.
When the Gulf Branch Trails Are Crowded
Potomac Overlook Regional Park, run by NOVA Parks, has its own November schedule a short drive away:
- Spooky Serpents, Friday, Oct. 30, 7–8 p.m. $7 per person, ages 7 and up, advance registration required.
- Raptors of the Potomac, Saturday, Nov. 7, 2–3 p.m. $7 per person, ages 8 and up, preregistration required.
- Autumn Afternoon Retreat: Forest Bathing, Tea, & Stories, Saturday, Nov. 14, 1:30–4:30 p.m. A $50 adult program, preregistration required.
If you'd rather volunteer, the County lists another invasive plant removal on Saturday, Nov. 21, at Zachary Taylor Park, 2507 N. Upton St.
The Drive In, Down Military Road
If you drive to the Nature Center, you'll pass another County project. The roundabout at Military Road and Nelly Custis Drive has been under construction since fall 2025. The County says the rebuilt intersection should be fully working this fall, but the project as a whole runs into summer 2027. That includes moving overhead utilities underground and upgrading water and sanitary lines. The latest turn restrictions there closed eastbound Military Road to Nelly Custis and southbound Nelly Custis to Military Road, and they were scheduled to end Sunday, Oct. 25. Check the County's Military Road project page before you go in case anything has changed.
The County expects the stream work to run through early 2027 and the roundabout project to finish in summer 2027.
Caitlin Platt lives in North Arlington and follows projects like Gulf Branch because they change how the streets around them feel. If you're in the Gulf Branch watershed and want to talk through how this corridor and the Military Road work fit with your plans for your home, schedule a consultation.
