US Bridges

Winthrop RD over Gardiners Creek

Fair

Suffolk County, New York · E of Shelter Island Hts · Structure no. 000000003300830

Built
1940
85 years old
Condition
Fair
inspected May 2024
Type
Tee Beam
Concrete
Length
44 ft
1 main span
Daily traffic
1,703
2020 count
Owner
County
County Highway Agency

About this bridge

Winthrop RD over Gardiners Creek is a concrete tee beam carrying Winthrop RD over Gardiners Creek in Suffolk County, New York. It was built in 1940, so it is 85 years old, older than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,703 vehicles a day, roughly 5% of them trucks, projected to reach 2,384 by 2040. The structure is 44 ft (13.4 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesWinthrop RD
CrossesGardiners Creek
LocationE of Shelter Island Hts
CountySuffolk County
StateNew York
Coordinates41.08402, -72.343
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating47 US tons
Inventory rating28 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length44 ft (13.4 m)
Longest span42 ft (12.8 m)
Deck width32 ft (9.8 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,703 (2020)
Projected traffic2,384 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$1.3 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Winthrop RD over Gardiners Creek built?

It was built in 1940, making it 85 years old in 2025.

What condition is Winthrop RD over Gardiners Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.

How much traffic does Winthrop RD over Gardiners Creek carry?

About 1,703 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Winthrop RD over Gardiners Creek?

The structure is 44 ft (13.4 m) long with a longest span of 42 ft (12.8 m) and a deck 32 ft wide.

Who owns Winthrop RD over Gardiners Creek?

It is owned by the County Highway Agency.