US Bridges

RTE 25 over Dam Pond Channel

Fair

Suffolk County, New York · SH 25 - .6 MI E of E Mari · Structure no. 000000001060900

Built
1991
34 years old
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
24 ft
1 main span
Daily traffic
3,707
2020 count
Owner
State
State Highway Agency

About this bridge

RTE 25 over Dam Pond Channel is a prestressed concrete box beam or girders - multiple carrying RTE 25 over Dam Pond Channel in Suffolk County, New York. It was built in 1991, so it is 34 years old, younger 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 3,707 vehicles a day, roughly 8% of them trucks, projected to reach 4,277 by 2041. The structure is 24 ft (7.3 m) long and 45 ft wide.

Location

Open in Google Maps
CarriesRTE 25
CrossesDam Pond Channel
LocationSH 25 - .6 MI E of E Mari
RouteState Highway 25
CountySuffolk County
StateNew York
Coordinates41.13154, -72.32756
Functional classUrban Other Principal 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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating63.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span21 ft (6.4 m)
Deck width45 ft (13.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,707 (2020)
Projected traffic4,277 by 2041
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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$2.2 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 25 over Dam Pond Channel built?

It was built in 1991, making it 34 years old in 2025.

What condition is RTE 25 over Dam Pond Channel 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 June 2024.

How much traffic does RTE 25 over Dam Pond Channel carry?

About 3,707 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is RTE 25 over Dam Pond Channel?

The structure is 24 ft (7.3 m) long with a longest span of 21 ft (6.4 m) and a deck 45 ft wide.

Who owns RTE 25 over Dam Pond Channel?

It is owned by the State Highway Agency.