US Bridges

RTE I684 over Broad Brook

Good

Westchester County, New York · 1.4 MI N Exit 4 of I684 · Structure no. 000000001091142

Built
1968
57 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete
Length
28 ft
3 main spans
Daily traffic
29,529
2020 count
Owner
State
State Highway Agency

About this bridge

RTE I684 over Broad Brook is a concrete culvert carrying RTE I684 over Broad Brook in Westchester County, New York. It was built in 1968, so it is 57 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 29,529 vehicles a day, roughly 11% of them trucks, projected to reach 50,003 by 2041. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 0.6 mi (1 km).

CarriesRTE I684
CrossesBroad Brook
Location1.4 MI N Exit 4 of I684
RouteInterstate 684
Coordinates41.21519, -73.68555
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,529 (2020)
Projected traffic50,003 by 2041
Trucks11%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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$725,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE I684 over Broad Brook built?

It was built in 1968, making it 57 years old in 2025.

What condition is RTE I684 over Broad 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 June 2024.

How much traffic does RTE I684 over Broad Brook carry?

About 29,529 vehicles per day (2020 count), of which roughly 11% are trucks.

How long is RTE I684 over Broad Brook?

The structure is 28 ft (8.5 m) long with a longest span of 8 ft (2.4 m).

Who owns RTE I684 over Broad Brook?

It is owned by the State Highway Agency.