US Bridges

Colonial Road over Long Island-P Wsh

Good

Nassau County, New York · 1 Mile SW of Manhasset · Structure no. 000000002200020

Built
2016
9 years old
Condition
Good
inspected July 2024
Type
Arch - Deck
Concrete
Length
53 ft
1 main span
Daily traffic
2,510
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Colonial Road over Long Island-P Wsh is a concrete arch - deck carrying Colonial Road over Long Island-P Wsh in Nassau County, New York. It was built in 2016, so it is 9 years old, younger than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,510 vehicles a day, roughly 1% of them trucks, projected to reach 3,105 by 2041. The structure is 53 ft (16.2 m) long and 322 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesColonial Road
CrossesLong Island-P Wsh
Location1 Mile SW of Manhasset
Coordinates40.79041, -73.71732
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment2: Basically intolerable, requiring high priority of replacement
Operating rating66.8 US tons
Inventory rating51.5 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length53 ft (16.2 m)
Longest span52 ft (15.8 m)
Deck width322 ft (98 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,510 (2021)
Projected traffic3,105 by 2041
Trucks1%
Lanes on structure2
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 statusHistorical significance not determinable at this time
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$28.5 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Colonial Road over Long Island-P Wsh built?

It was built in 2016, making it 9 years old in 2025.

What condition is Colonial Road over Long Island-P Wsh in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2024.

How much traffic does Colonial Road over Long Island-P Wsh carry?

About 2,510 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Colonial Road over Long Island-P Wsh?

The structure is 53 ft (16.2 m) long with a longest span of 52 ft (15.8 m) and a deck 322 ft wide.

Who owns Colonial Road over Long Island-P Wsh?

It is owned by the Town or Township Highway Agency.