US Bridges

Hrp SB Ramp over W.Mamaroneck River

Fair

Westchester County, New York · Mamaroneckave Ramps Tohrp · Structure no. 000000001073200

Built
1987
38 years old
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
48 ft
1 main span
Daily traffic
2,844
2020 count
Owner
State
State Highway Agency

About this bridge

Hrp SB Ramp over W.Mamaroneck River is a prestressed concrete box beam or girders - multiple carrying Hrp SB Ramp over W.Mamaroneck River in Westchester County, New York. It was built in 1987, so it is 38 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 5 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 2,844 vehicles a day, projected to reach 4,012 by 2041. The structure is 48 ft (14.7 m) long and 55 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesHrp SB Ramp
CrossesW.Mamaroneck River
LocationMamaroneckave Ramps Tohrp
Coordinates40.98398, -73.74467
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88 US tons
Inventory rating48 US tons

Structure

MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length48 ft (14.7 m)
Longest span44 ft (13.4 m)
Deck width55 ft (16.8 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,844 (2020)
Projected traffic4,012 by 2041
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
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$1.5 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Hrp SB Ramp over W.Mamaroneck River built?

It was built in 1987, making it 38 years old in 2025.

What condition is Hrp SB Ramp over W.Mamaroneck 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 July 2024.

How much traffic does Hrp SB Ramp over W.Mamaroneck River carry?

About 2,844 vehicles per day (2020 count).

How long is Hrp SB Ramp over W.Mamaroneck River?

The structure is 48 ft (14.7 m) long with a longest span of 44 ft (13.4 m) and a deck 55 ft wide.

Who owns Hrp SB Ramp over W.Mamaroneck River?

It is owned by the State Highway Agency.