US Bridges

Mile Square Road over Ex-Nycrr Putnam B

Fair

Westchester County, New York · S of MI Sq RD & Tuckahoe · Structure no. 000000007700520

Built
1983
42 years old, rebuilt 2010
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
30 ft
1 main span
Daily traffic
4,312
2018 count
Owner
County
County Highway Agency

About this bridge

Mile Square Road over Ex-Nycrr Putnam B is a prestressed concrete box beam or girders - multiple carrying Mile Square Road over Ex-Nycrr Putnam B in Westchester County, New York. It was built in 1983 and reconstructed in 2010, so it is 42 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 4,312 vehicles a day, roughly 2% of them trucks, projected to reach 5,335 by 2041. The structure is 30 ft (9.1 m) long and 21 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesMile Square Road
CrossesEx-Nycrr Putnam B
LocationS of MI Sq RD & Tuckahoe
RouteCity Street 0
Coordinates40.95323, -73.86162
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment6: Equal to present minimum criteria
Operating rating103 US tons
Inventory rating61 US tons

Structure

MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span29 ft (8.8 m)
Deck width21 ft (6.4 m)
Roadway width13 ft (4.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,312 (2018)
Projected traffic5,335 by 2041
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway and pedestrian
CrossesPedestrian / bicycle
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$661,000 (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mile Square Road over Ex-Nycrr Putnam B built?

It was built in 1983, making it 42 years old in 2025. It was reconstructed in 2010.

What condition is Mile Square Road over Ex-Nycrr Putnam B 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 June 2024.

How much traffic does Mile Square Road over Ex-Nycrr Putnam B carry?

About 4,312 vehicles per day (2018 count), of which roughly 2% are trucks.

How long is Mile Square Road over Ex-Nycrr Putnam B?

The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.8 m) and a deck 21 ft wide.

Who owns Mile Square Road over Ex-Nycrr Putnam B?

It is owned by the County Highway Agency.