US Bridges

Lawrence Street over Saw Mill River

Fair

Westchester County, New York · 1.0MI S of Ardsley · Structure no. 000000002265240

Built
1984
41 years old
Condition
Fair
inspected June 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
41 ft
1 main span
Daily traffic
4,648
2020 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Lawrence Street over Saw Mill River is a prestressed concrete box beam or girders - multiple carrying Lawrence Street over Saw Mill River in Westchester County, New York. It was built in 1984, so it is 41 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 4,648 vehicles a day, roughly 2% of them trucks, projected to reach 6,507 by 2040. The structure is 41 ft (12.5 m) long and 37 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLawrence Street
CrossesSaw Mill River
Location1.0MI S of Ardsley
Coordinates41.00179, -73.85447
Functional classUrban Local

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
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 rating60 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length41 ft (12.5 m)
Longest span36 ft (10.9 m)
Deck width37 ft (11.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,648 (2020)
Projected traffic6,507 by 2040
Trucks2%
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

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$1.2 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Lawrence Street over Saw Mill River built?

It was built in 1984, making it 41 years old in 2025.

What condition is Lawrence Street over Saw Mill 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 June 2023.

How much traffic does Lawrence Street over Saw Mill River carry?

About 4,648 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Lawrence Street over Saw Mill River?

The structure is 41 ft (12.5 m) long with a longest span of 36 ft (10.9 m) and a deck 37 ft wide.

Who owns Lawrence Street over Saw Mill River?

It is owned by the Town or Township Highway Agency.