US Bridges

Plandome Road over LIRR -Port Wash. Br.

FairPosted for load

Nassau County, New York · In Manhasset · Structure no. 000000003364580

Built
1900
125 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
78 ft
3 main spans
Daily traffic
13,937
2020 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Plandome Road over LIRR -Port Wash. Br. is a steel stringer/multi-beam or girder carrying Plandome Road over LIRR -Port Wash. Br. in Nassau County, New York. It was built in 1900, so it is 125 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 13,937 vehicles a day, roughly 3% of them trucks, projected to reach 16,930 by 2041. The structure is 78 ft (23.8 m) long and 71 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesPlandome Road
CrossesLIRR -Port Wash. Br.
LocationIn Manhasset
RouteCity Street 0
CountyNassau County
StateNew York
Coordinates40.79696, -73.69946
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45 US tons
Inventory rating16 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length78 ft (23.8 m)
Longest span32 ft (9.7 m)
Deck width71 ft (21.7 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,937 (2020)
Projected traffic16,930 by 2041
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedDeck replacement with only incidental widening
Estimated improvement cost$3.7 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Plandome Road over LIRR -Port Wash. Br. built?

It was built in 1900, making it 125 years old in 2025.

What condition is Plandome Road over LIRR -Port Wash. Br. 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 July 2024.

How much traffic does Plandome Road over LIRR -Port Wash. Br. carry?

About 13,937 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is Plandome Road over LIRR -Port Wash. Br.?

The structure is 78 ft (23.8 m) long with a longest span of 32 ft (9.7 m) and a deck 71 ft wide.

Who owns Plandome Road over LIRR -Port Wash. Br.?

It is owned by the Town or Township Highway Agency.