US Bridges

RTE 121 over Cross River Reservoir

Fair

Westchester County, New York · 4.6 MI N JCT Rts 121+22 · Structure no. 000000001037420

Built
1906
119 years old
Condition
Fair
inspected October 2024
Type
Arch - Deck
Concrete
Length
50 ft
1 main span
Daily traffic
2,996
2019 count
Owner
Local
Other Local Agency

About this bridge

RTE 121 over Cross River Reservoir is a concrete arch - deck carrying RTE 121 over Cross River Reservoir in Westchester County, New York. It was built in 1906, so it is 119 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 2,996 vehicles a day, roughly 6% of them trucks, projected to reach 3,639 by 2041. The structure is 50 ft (15.2 m) long and 29 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

Location

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CarriesRTE 121
CrossesCross River Reservoir
Location4.6 MI N JCT Rts 121+22
RouteState Highway 121
CountyWestchester County
StateNew York
Coordinates41.26146, -73.61465
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
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 protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating52.2 US tons
Inventory rating23.6 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length50 ft (15.2 m)
Longest span30 ft (9.1 m)
Deck width29 ft (8.8 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,996 (2019)
Projected traffic3,639 by 2041
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed7.5 mi (12 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$749,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 121 over Cross River Reservoir built?

It was built in 1906, making it 119 years old in 2025.

What condition is RTE 121 over Cross River Reservoir 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 October 2024.

How much traffic does RTE 121 over Cross River Reservoir carry?

About 2,996 vehicles per day (2019 count), of which roughly 6% are trucks.

How long is RTE 121 over Cross River Reservoir?

The structure is 50 ft (15.2 m) long with a longest span of 30 ft (9.1 m) and a deck 29 ft wide.

Who owns RTE 121 over Cross River Reservoir?

It is owned by the Other Local Agency and maintained by the State Highway Agency.