US Bridges

Convent Road over Tappan Lake

Fair

Rockland County, New York · 3.2 MI NW of Sparkill · Structure no. 000000003346000

Built
1967
58 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
56 ft
1 main span
Daily traffic
2,892
2021 count
Owner
County
County Highway Agency

About this bridge

Convent Road over Tappan Lake is a steel stringer/multi-beam or girder carrying Convent Road over Tappan Lake in Rockland County, New York. It was built in 1967, so it is 58 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 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 2,892 vehicles a day, roughly 3% of them trucks, projected to reach 3,513 by 2041. The structure is 56 ft (17.1 m) long and 52 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesConvent Road
CrossesTappan Lake
Location3.2 MI NW of Sparkill
RouteCounty Highway 0
CountyRockland County
StateNew York
Coordinates41.05452, -73.98198
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating89 US tons
Inventory rating53 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length56 ft (17.1 m)
Longest span52 ft (15.8 m)
Deck width52 ft (15.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,892 (2021)
Projected traffic3,513 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$4.3 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Convent Road over Tappan Lake built?

It was built in 1967, making it 58 years old in 2025.

What condition is Convent Road over Tappan Lake 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 November 2023.

How much traffic does Convent Road over Tappan Lake carry?

About 2,892 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Convent Road over Tappan Lake?

The structure is 56 ft (17.1 m) long with a longest span of 52 ft (15.8 m) and a deck 52 ft wide.

Who owns Convent Road over Tappan Lake?

It is owned by the County Highway Agency.