What You'll Find at the Route 154 Causeway

The causeway on Route 154 in Old Saybrook is a narrow, elevated stretch of road that crosses tidal marsh and shallow water between the mainland and the barrier islands. It's a working piece of infrastructure—cars pass constantly—but it's also a legitimate fishing spot that locals have worked for decades. The water on both sides holds striped bass, bluefish, and weakfish depending on the season, and the structure of the causeway itself creates current breaks and deeper channels that concentrate fish.

Access is informal and comes with real constraints. There's no dedicated parking lot, no amenities, and no official designation as a fishing area. You park along the shoulder of Route 154 where you can find space, walk to the water's edge, and fish from the rocks or shallow banks. The causeway is busiest during spring and fall migrations, when stripers move through in predictable waves. Summer can be slower, though early morning and dusk produce. Winter is possible but cold and less productive.

The fishing here is tide-dependent. Incoming and outgoing tides both move water through the causeway structure, and that current is what brings fish. Slack tide—the brief window between tides—is usually slower. Most anglers fish the hour before and two hours after the tide turn, when current is strongest and fish are actively feeding.

Key Takeaways

  • The Route 154 causeway holds striped bass, bluefish, and weakfish in spring and fall, with best results on moving tides.
  • Parking is shoulder parking only along Route 154; there is no dedicated lot, and you must stay clear of traffic.
  • Spring (April through May) and fall (September through October) are peak seasons; summer is slower but possible at dawn and dusk.
  • Fish the hour before and two hours after tide changes, when current is strongest and fish feed actively.
  • Bring a headlamp if you fish early morning or evening, and wear a safety vest or bright clothing because the causeway is an active road.

Spring and Fall Striped Bass Runs

April through May is when the causeway produces most consistently. Striped bass migrate north along the Connecticut coast in spring, and the causeway's current breaks and shallow structure intercept them. Fish 4 to 6 inches of moving water on the incoming tide, and focus on the deeper channels on either side of the causeway where the current is strongest. Live eels are the standard bait; bunker chunks work when eels are hard to find. Casting small to medium plugs—pencil poppers and shallow swimmers—also takes fish, especially at dawn.

Fall runs (September through October) are equally strong, sometimes stronger. Water temperature is dropping, baitfish are moving south, and stripers are aggressive. The same tidal windows apply. Many anglers prefer fall because the water is clearer and the fishing window extends later into the morning. By November, the bite slows as fish move offshore toward deeper water.

Summer Fishing and Slack Periods

June through August is slower at the causeway, but not dead. Water temperature rises, and fish move to deeper channels and offshore structure during midday. Fish early—first light to mid-morning—and again at dusk. Weakfish (gray trout) become more common in summer and will take small shrimp, soft plastics, and light jigs. Bluefish are present but scattered.

If you arrive during slack tide or slow conditions, move to a different part of the causeway or wait for the next tide cycle. The causeway is small enough that you can fish both sides in a single outing if the first side is slow. Some anglers keep a tide table on their phone and plan their trip around the strongest current window.

Parking, Access, and Safety

There is no parking lot at the Route 154 causeway. You park along the shoulder of Route 154 where space allows, usually on the north side of the road. Parking fills quickly during peak season weekends. Arrive early or fish during weekday mornings if you want to avoid the crowd and find a spot easily.

Once parked, walk carefully to the water. The causeway is an active road with regular traffic. Wear a safety vest, bright clothing, or a headlamp if you're fishing early or late. Never fish in the road itself. The water is accessible from the rocky banks and shallow edges on both sides; the north side (facing the sound) is usually easier to fish than the south side, which is shallower and more exposed to wind.

The bottom is rocky and uneven. Wear wading boots with good grip, and watch your footing, especially if you're moving along the rocks in low light. The water can be cold even in spring and fall, so dress in layers and consider a wetsuit if you plan to wade deep.

Tackle and Bait for the Causeway

Live eels (8 to 12 inches) are the most reliable bait for striped bass. Fish them on a simple rig: a sliding sinker, a barrel swivel, and a 2/0 to 4/0 circle hook. Cast uptide and let the eel work the current. Bunker chunks work when eels aren't available, though they attract smaller fish and require more frequent casting.

For plugging, bring pencil poppers (3 to 4 inches), shallow-running swimmers, and small metal spoons. Cast uptide and work the plug with the current. Topwater plugs work at dawn and dusk. Soft plastics on light jigs (1/4 to 1/2 ounce) are effective for weakfish and bluefish in summer.

Bring a small cooler with ice to keep bait fresh, especially in warm months. The causeway is exposed, and bait deteriorates quickly in sun and heat. A headlamp is essential if you fish before sunrise or after sunset. A small net is useful but not necessary; most fish here are landed by hand or beached on the rocks.

Tides and Timing

The causeway is tidal water, and tide timing is everything. Download a tide table for Old Saybrook (NOAA provides free tables online) or use a tide app on your phone. The strongest current runs for about two hours after the tide begins to turn. Fish the hour before the turn and the two hours after—that's your window.

Incoming tides generally produce better than outgoing tides, though both work. The incoming tide pushes baitfish and stripers into the shallower structure around the causeway. Outgoing tides pull fish toward deeper water offshore. If you can only fish one tide, choose the incoming.

Slack tide (the 15 to 30 minutes between tides) is usually slow. If you arrive during slack, either wait for the next tide to turn or fish a different location. Many anglers plan their trip to arrive 30 minutes before the tide turn, fish through the peak window, then leave as the current weakens.

Seasonal Patterns and What to Expect

April and May bring the spring striped bass migration. Water temperature is 45 to 55 degrees. Fish are aggressive and hungry after winter. Expect steady action on moving tides, especially on live eels. Weekends are crowded; weekday mornings are quieter.

June through August is slower. Water warms to 65 to 75 degrees. Stripers move to deeper channels and offshore structure. Weakfish and bluefish are more common. Fish early morning and evening. Midday is usually slow.

September and October bring the fall migration. Water cools to 55 to 65 degrees. Stripers return to the shallows and feed aggressively. This is often the best month of the year at the causeway. Fish are larger and more abundant than in spring. The causeway is busy, but the fishing is worth it.

November through March is slow. Water temperature drops below 50 degrees. Fish move offshore. The causeway is fishable but inconsistent. Winter storms can make access dangerous. Most anglers focus on other locations during winter.

Frequently Asked Questions

Can I fish the causeway at night?

Yes, but you need a headlamp and bright clothing because Route 154 is an active road. Night fishing can be productive during summer when daytime is slow, but the causeway is exposed and windy. Fish the hour before and after tide turns, just as you would during the day.

What's the best tide for the causeway?

Incoming tides are generally better than outgoing, but both work. The strongest current runs for about two hours after the tide begins to turn. Fish the hour before the turn and the two hours after for your best window.

Do I need a Connecticut fishing license?

Yes. Connecticut requires a saltwater fishing license for anyone 16 and older. You can purchase a short-term license (one day, seven days, or annual) online through the Connecticut DEEP website or at most tackle shops in Old Saybrook.

Is the causeway crowded?

It fills up on spring and fall weekends, especially during peak tide windows. Weekday mornings are quieter. If you want solitude, fish early morning on a weekday or during summer when fewer anglers are out.

What if I can't find parking?

Parking is limited to the shoulder of Route 154. If it's full, drive back toward Old Saybrook center or try again at a different tide window. Early morning (before 7 a.m.) usually has more space than mid-morning or afternoon.