US Bridges

RTE 120A over Blind Brook

Good

Westchester County, New York · 0.2 MI E JCT Rts 287&120A · Structure no. 000000001037380

Built
1997
28 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
50 ft
1 main span
Daily traffic
18,013
2017 count
Owner
State
State Highway Agency

About this bridge

RTE 120A over Blind Brook is a steel stringer/multi-beam or girder carrying RTE 120A over Blind Brook in Westchester County, New York. It was built in 1997, so it is 28 years old, younger than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 18,013 vehicles a day, roughly 3% of them trucks, projected to reach 21,882 by 2041. The structure is 50 ft (15.2 m) long and 58 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesRTE 120A
CrossesBlind Brook
Location0.2 MI E JCT Rts 287&120A
RouteState Highway 120A
Coordinates41.00845, -73.69394
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating77.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length50 ft (15.2 m)
Longest span46 ft (14 m)
Deck width58 ft (17.7 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,013 (2017)
Projected traffic21,882 by 2041
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

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$2.9 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 120A over Blind Brook built?

It was built in 1997, making it 28 years old in 2025.

What condition is RTE 120A over Blind Brook in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does RTE 120A over Blind Brook carry?

About 18,013 vehicles per day (2017 count), of which roughly 3% are trucks.

How long is RTE 120A over Blind Brook?

The structure is 50 ft (15.2 m) long with a longest span of 46 ft (14 m) and a deck 58 ft wide.

Who owns RTE 120A over Blind Brook?

It is owned by the State Highway Agency.