US Bridges

Peconic Ave over Peconic River

Fair

Suffolk County, New York · At Riverhead · Structure no. 000000003300850

Built
1930
95 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
28 ft
1 main span
Daily traffic
19,503
2018 count
Owner
County
County Highway Agency

About this bridge

Peconic Ave over Peconic River is a steel stringer/multi-beam or girder carrying Peconic Ave over Peconic River in Suffolk County, New York. It was built in 1930, so it is 95 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 19,503 vehicles a day, roughly 4% of them trucks, projected to reach 23,692 by 2041. The structure is 28 ft (8.5 m) long and 66 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesPeconic Ave
CrossesPeconic River
LocationAt Riverhead
RouteCounty Highway 0
CountySuffolk County
StateNew York
Coordinates40.91599, -72.66261
Functional classUrban Minor Arterial

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 protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.1 US tons
Inventory rating32.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span27 ft (8.2 m)
Deck width66 ft (20.1 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,503 (2018)
Projected traffic23,692 by 2041
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 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$2.1 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Peconic Ave over Peconic River built?

It was built in 1930, making it 95 years old in 2025.

What condition is Peconic Ave over Peconic River 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 April 2024.

How much traffic does Peconic Ave over Peconic River carry?

About 19,503 vehicles per day (2018 count), of which roughly 4% are trucks.

How long is Peconic Ave over Peconic River?

The structure is 28 ft (8.5 m) long with a longest span of 27 ft (8.2 m) and a deck 66 ft wide.

Who owns Peconic Ave over Peconic River?

It is owned by the County Highway Agency.