US Bridges

Mayer Drive over Mahwah River

Fair

Rockland County, New York · 3.7 MI SE of Sloatsburg · Structure no. 000000003346210

Built
1910
115 years old, rebuilt 2011
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
58 ft
1 main span
Daily traffic
2,119
2020 count
Owner
County
County Highway Agency

About this bridge

Mayer Drive over Mahwah River is a steel stringer/multi-beam or girder carrying Mayer Drive over Mahwah River in Rockland County, New York. It was built in 1910 and reconstructed in 2011, so it is 115 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 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 2,119 vehicles a day, roughly 4% of them trucks, projected to reach 2,621 by 2041. The structure is 58 ft (17.7 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMayer Drive
CrossesMahwah River
Location3.7 MI SE of Sloatsburg
CountyRockland County
StateNew York
Coordinates41.13336, -74.12991
Functional classUrban Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length58 ft (17.7 m)
Longest span57 ft (17.4 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,119 (2020)
Projected traffic2,621 by 2041
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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$1.8 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mayer Drive over Mahwah River built?

It was built in 1910, making it 115 years old in 2025. It was reconstructed in 2011.

What condition is Mayer Drive over Mahwah 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 Mayer Drive over Mahwah River carry?

About 2,119 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is Mayer Drive over Mahwah River?

The structure is 58 ft (17.7 m) long with a longest span of 57 ft (17.4 m) and a deck 31 ft wide.

Who owns Mayer Drive over Mahwah River?

It is owned by the County Highway Agency.