US Bridges

RTE I684 over Muscoot Reservoir Outlet

Poor

Westchester County, New York · .5 MI N JCT SH 138 & I684 · Structure no. 000000001077550

Built
1972
53 years old
Condition
Poor
inspected December 2024
Type
Culvert
Steel
Length
27 ft
3 main spans
Daily traffic
63,160
2021 count
Owner
State
State Highway Agency

About this bridge

RTE I684 over Muscoot Reservoir Outlet is a steel culvert carrying RTE I684 over Muscoot Reservoir Outlet in Westchester County, New York. It was built in 1972, so it is 53 years old, younger than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 63,160 vehicles a day, roughly 10% of them trucks, projected to reach 106,955 by 2041. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesRTE I684
CrossesMuscoot Reservoir Outlet
Location.5 MI N JCT SH 138 & I684
RouteInterstate 684
CountyWestchester County
StateNew York
Coordinates41.30296, -73.67485
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionDecember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80.6 US tons
Inventory rating14.4 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadUnknown
Structure length27 ft (8.2 m)
Longest span7 ft (2.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic63,160 (2021)
Projected traffic106,955 by 2041
Trucks10%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$1.5 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE I684 over Muscoot Reservoir Outlet built?

It was built in 1972, making it 53 years old in 2025.

What condition is RTE I684 over Muscoot Reservoir Outlet in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2024.

How much traffic does RTE I684 over Muscoot Reservoir Outlet carry?

About 63,160 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is RTE I684 over Muscoot Reservoir Outlet?

The structure is 27 ft (8.2 m) long with a longest span of 7 ft (2.1 m).

Who owns RTE I684 over Muscoot Reservoir Outlet?

It is owned by the State Highway Agency.