US Bridges

RTE 9A over Mnrr Hu Line

Fair

Westchester County, New York · 3.7 MI N JCT Rts 9A+129 · Structure no. 000000001006240

Built
1935
90 years old, rebuilt 1990
Condition
Fair
inspected October 2024
Type
Girder and Floorbeam System
Steel
Length
148 ft
1 main span
Daily traffic
11,781
2015 count
Owner
State
State Highway Agency

About this bridge

RTE 9A over Mnrr Hu Line is a steel girder and floorbeam system carrying RTE 9A over Mnrr Hu Line in Westchester County, New York. It was built in 1935 and reconstructed in 1990, so it is 90 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 11,781 vehicles a day, roughly 6% of them trucks, projected to reach 14,311 by 2041. The structure is 148 ft (45.1 m) long and 46 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesRTE 9A
CrossesMnrr Hu Line
Location3.7 MI N JCT Rts 9A+129
RouteState Highway 9A
CountyWestchester County
StateNew York
Coordinates41.23985, -73.92214
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.9 US tons
Inventory rating33.2 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length148 ft (45.1 m)
Longest span82 ft (25 m)
Deck width46 ft (14 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,781 (2015)
Projected traffic14,311 by 2041
Trucks6%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

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$6.5 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was RTE 9A over Mnrr Hu Line built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1990.

What condition is RTE 9A over Mnrr Hu Line 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 9A over Mnrr Hu Line carry?

About 11,781 vehicles per day (2015 count), of which roughly 6% are trucks.

How long is RTE 9A over Mnrr Hu Line?

The structure is 148 ft (45.1 m) long with a longest span of 82 ft (25 m) and a deck 46 ft wide.

Who owns RTE 9A over Mnrr Hu Line?

It is owned by the State Highway Agency.