US Bridges

Winterbottom Lane over Mill River

Fair

Westchester County, New York · 8.0 MI E of Mt Kisco · Structure no. 000000002265540

Built
1975
50 years old, rebuilt 2003
Condition
Fair
inspected July 2024
Type
Culvert
Steel
Length
39 ft
3 main spans
Daily traffic
111
2017 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Winterbottom Lane over Mill River is a steel culvert carrying Winterbottom Lane over Mill River in Westchester County, New York. It was built in 1975 and reconstructed in 2003, so it is 50 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 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 111 vehicles a day, roughly 5% of them trucks, projected to reach 155 by 2037. The structure is 39 ft (11.9 m) long. If it were closed, the detour would be 0.6 mi (1 km).

CarriesWinterbottom Lane
CrossesMill River
Location8.0 MI E of Mt Kisco
Coordinates41.20963, -73.55495
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating110 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadUnknown
Structure length39 ft (11.9 m)
Longest span13 ft (3.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic111 (2017)
Projected traffic155 by 2037
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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$349,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Winterbottom Lane over Mill River built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 2003.

What condition is Winterbottom Lane over 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 July 2024.

How much traffic does Winterbottom Lane over Mill River carry?

About 111 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is Winterbottom Lane over Mill River?

The structure is 39 ft (11.9 m) long with a longest span of 13 ft (3.9 m).

Who owns Winterbottom Lane over Mill River?

It is owned by the Town or Township Highway Agency.