US Bridges

RTE 25A over Cold Spring Stream

Good

Suffolk County, New York · RTE 25A-COLD Spring Harbo · Structure no. 000000001018360

Built
1999
26 years old
Condition
Good
inspected October 2023
Type
Culvert
Concrete
Length
35 ft
2 main spans
Daily traffic
15,682
2020 count
Owner
State
State Highway Agency

About this bridge

RTE 25A over Cold Spring Stream is a concrete culvert carrying RTE 25A over Cold Spring Stream in Suffolk County, New York. It was built in 1999, so it is 26 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 15,682 vehicles a day, roughly 4% of them trucks, projected to reach 18,093 by 2041. The structure is 35 ft (10.7 m) long and 54 ft wide.

CarriesRTE 25A
CrossesCold Spring Stream
LocationRTE 25A-COLD Spring Harbo
RouteState Highway 25A
Coordinates40.85787, -73.46394
Functional classUrban Other Principal Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating43 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 25 or greater
Structure length35 ft (10.7 m)
Longest span16 ft (4.8 m)
Deck width54 ft (16.5 m)
Roadway width51 ft (15.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,682 (2020)
Projected traffic18,093 by 2041
Trucks4%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 RTE 25A over Cold Spring Stream built?

It was built in 1999, making it 26 years old in 2025.

What condition is RTE 25A over Cold Spring Stream 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 October 2023.

How much traffic does RTE 25A over Cold Spring Stream carry?

About 15,682 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is RTE 25A over Cold Spring Stream?

The structure is 35 ft (10.7 m) long with a longest span of 16 ft (4.8 m) and a deck 54 ft wide.

Who owns RTE 25A over Cold Spring Stream?

It is owned by the State Highway Agency.