US Bridges

Route 136 over Saugatuck River

PoorPosted for load

Fairfield County, Connecticut · Between I-95 Exit 17 & 18 · Structure no. 01349

Built
1870
155 years old, rebuilt 1993
Condition
Poor
inspected September 2024
Type
Movable - Swing
Steel Continuous
Length
287 ft
2 main spans
Daily traffic
12,400
2023 count
Owner
State
State Highway Agency

About this bridge

Route 136 over Saugatuck River is a steel continuous movable - swing carrying Route 136 over Saugatuck River in Fairfield County, Connecticut. It was built in 1870 and reconstructed in 1993, so it is 155 years old, older than the Connecticut average of 56.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 12,400 vehicles a day, roughly 5% of them trucks, projected to reach 18,425 by 2043. The structure is 287 ft (87.5 m) long and 20 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesRoute 136
CrossesSaugatuck River
LocationBetween I-95 Exit 17 & 18
RouteState Highway 136
Coordinates41.12276, -73.3691
Functional classUrban Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating14.3 US tons
Inventory rating11 US tons

Structure

Structure typeMovable - Swing
MaterialSteel Continuous
DeckSteel plate
Main spans2 (+2 approach)
Design loadHS 20
Structure length287 ft (87.5 m)
Longest span70 ft (21.3 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deck13 ft (3.9 m)

Traffic and service

Average daily traffic12,400 (2023)
Projected traffic18,425 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$40 million
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Route 136 over Saugatuck River built?

It was built in 1870, making it 155 years old in 2025. It was reconstructed in 1993.

What condition is Route 136 over Saugatuck River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does Route 136 over Saugatuck River carry?

About 12,400 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Route 136 over Saugatuck River?

The structure is 287 ft (87.5 m) long with a longest span of 70 ft (21.3 m) and a deck 20 ft wide.

Who owns Route 136 over Saugatuck River?

It is owned by the State Highway Agency.