What You'll Find at the Route 154 Causeway

The causeway on Route 154 in Old Saybrook is a narrow bridge crossing the Connecticut River estuary, and it holds striped bass, bluefish, and seasonal flounder in the channels and shallows on both sides. The structure itself — pilings, current breaks, and the tidal flow funneling through — concentrates fish, especially during the spring and fall migrations. Access is straightforward: you can fish from the shoulders on both the north and south sides, and the bridge is low enough that you can reach the water without climbing.

This is not a remote wilderness spot. Route 154 is a working road, traffic moves steadily, and the causeway is narrow. But that same accessibility makes it reliable for anglers without a boat, and the fishing can be productive if you time the tide and understand what species are moving through during each season.

Key Takeaways

  • The causeway holds striped bass year-round and bluefish during spring and fall, with the best action during moving tides when current pushes baitfish through the channels.
  • You can fish from the road shoulders on both sides, but parking is limited and you must stay alert to traffic — this is not a dedicated fishing access point.
  • Connecticut requires a saltwater fishing permit for anyone 16 and older; you can get one online or at tackle shops in Old Saybrook.
  • Spring (April through May) and fall (September through October) are the most productive seasons, though striped bass are present through the winter.
  • The causeway is best fished on moving tides — incoming or outgoing — when current is strongest and baitfish are most active.

Seasons and What Species Are Present

Striped bass are the primary target year-round. They move through the causeway on their spring migration (April and May) heading upriver to spawn, and again in the fall (September and October) as they move back to deeper water. Winter fishing is possible — stripers hold in the deeper channels — but the water is cold and the fishing is slower. Summer sees fewer stripers because most have moved to deeper, cooler water, though you may encounter them early morning or late evening.

Bluefish arrive with the warming water in late April and May, and they return in September and October. They are aggressive and will take small plugs, spoons, and live baitfish. Flounder move through in spring and fall as well, though they are less predictable from the causeway than from a boat. Weakfish (sea trout) appear occasionally in late summer and early fall, usually in the shallower areas on the south side of the causeway.

The causeway is not a destination for summer fishing unless you are specifically targeting early-morning stripers or evening bluefish. Plan your trip for April through May or September through October if you want consistent action.

Tides, Current, and Best Times to Fish

The causeway funnels the Connecticut River estuary, and the current is strongest during the first two to three hours of an incoming or outgoing tide. This is when baitfish are most active and when stripers and bluefish feed. Slack tide — the brief period between incoming and outgoing — is usually slow. Fish the moving tides, and you will see more action than if you fish during slack or at the tail end of a tide change.

The tide tables for Old Saybrook apply directly to the causeway. You can find them online through NOAA or through most Connecticut fishing websites. A two-hour window on either side of the tide change is usually productive. If you can only fish for an hour or two, pick a day when the tide change falls during daylight and plan to arrive 30 minutes before the tide begins to move.

Water temperature also matters. In spring, the causeway warms faster than deeper water, so early-morning fishing can be slow until the sun has been up for an hour or two. In fall, the opposite is true — early morning is often better because the water is still cool and fish are more active.

Access, Parking, and What to Bring

There is no dedicated parking lot at the causeway. You must park on the shoulders of Route 154, and space is limited, especially on weekends. The road is narrow, and parking is not always obvious. Some anglers park at nearby public areas — check with the Old Saybrook Parks and Recreation office or local tackle shops for current guidance on where parking is permitted. Do not block driveways or park in private lots.

Once you are on the causeway, you fish from the road shoulders. The bridge is low, and you can reach the water from the edge. Wear a personal flotation device if you are wading, and stay aware of traffic. Vehicles pass regularly, and the shoulders are not wide. Keep your rod tip up and your line clear of the roadway.

Bring a small tackle box with plugs, spoons, and soft plastics in sizes 2 to 4 inches. Live baitfish — mullet, mackerel, or herring — work well for stripers, especially in spring. A net is useful but not essential. Wear non-slip shoes because the pilings and rocks can be slippery, especially on the incoming tide when water is moving fast.

Regulations and Permits

Connecticut requires a saltwater fishing permit for anyone 16 and older. You can purchase one online through the Connecticut DEEP (Department of Energy and Environmental Protection) website, or at tackle shops and sporting goods stores in Old Saybrook. The permit is inexpensive and valid for one year from the date of purchase.

Striped bass have a minimum size of 18 inches and a daily limit of one fish per angler. Bluefish have a 10-inch minimum and a 10-fish daily limit. Flounder (summer flounder) have a 19-inch minimum and a 5-fish daily limit. These regulations can change, so check the current DEEP regulations before you fish. The causeway is open to public fishing, and there are no special restrictions for this location beyond the statewide rules.

Tackle and Techniques

For striped bass, use medium-weight spinning rods (6 to 7 feet) with 15- to 20-pound braided line. Stripers respond well to small plugs (2 to 3 inches), spoons, and soft plastics rigged on jig heads. Cast parallel to the current and work your lure with a steady retrieve or a twitch-and-pause pattern. Live baitfish — especially mullet — are highly effective, especially in spring when stripers are feeding heavily before the spawn.

For bluefish, use similar tackle but expect aggressive strikes. Bluefish will chase a fast-moving lure, so work your retrieve with energy. They also have sharp teeth, so consider a short wire or heavy fluorocarbon leader to prevent bite-offs. Spoons and small plugs are reliable choices.

Flounder are bottom feeders and require a different approach. Use a jig head (1/4 to 1/2 ounce) with a soft plastic body, and work it slowly along the bottom on the deeper side of the causeway. Flounder fishing from the causeway is less predictable than from a boat, but it is worth trying during spring and fall migrations.

Nearby Alternatives and Related Fishing

If the causeway is crowded or the fishing is slow, Old Saybrook has other options. The Connecticut River itself — upstream from the causeway — holds stripers and offers more space, though access is limited to boat launches and a few public areas. Fenwick Point, at the mouth of the river, is accessible by boat and offers excellent striped bass and bluefish fishing during migrations.

Hammonasset Beach State Park, about 10 miles west, has a jetty and beach access where you can fish for stripers, bluefish, and flounder. The jetty is more exposed to wave action than the causeway, but it can be productive during the same seasons. Parking is ample, and the park has facilities.

If you want to fish deeper water and have access to a boat, consider hiring a charter out of Old Saybrook or Madison. Charter captains know the seasonal patterns and can put you on larger stripers and bluefish in deeper channels and offshore structure.

Frequently Asked Questions

Can I fish the causeway at night?

Technically yes, but it is not recommended. The causeway is narrow, traffic continues into the evening, and there is no lighting. Night fishing here is dangerous because drivers may not see you, and you cannot see the water clearly enough to fish safely. Stick to daylight hours.

What is the best month to fish the causeway?

May and October are typically the most productive. May brings the spring striped bass migration and early bluefish. October combines the fall striped bass migration with active bluefish and cooler water that keeps fish feeding throughout the day.

Do I need a boat to fish here?

No. The causeway is designed for shore fishing, and you can reach productive water from the road shoulders. A boat gives you more options and access to deeper channels, but it is not necessary to catch fish from the causeway itself.

What should I do if I hook a large striped bass?

Keep your rod tip up and your line tight. If the fish runs hard, let it take line rather than trying to horse it in — the current and the narrow space make it easy to break off. Use steady pressure and work the fish toward you in stages. A net helps, but you can also beach a fish on the rocks if necessary.

Is there a tackle shop near the causeway?

Yes. Old Saybrook has several tackle shops within a few miles. They carry local information about current conditions, recent catches, and permit requirements. Stop in before you fish — the staff can tell you what is working and where other anglers are having success.