US Bridges

RTE 906A over Crooked Hill RD

Fair

Suffolk County, New York · 2.9 MI E JCT SH231 & I495 · Structure no. 000000001049374

Built
1991
34 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
84 ft
1 main span
Daily traffic
13,352
2020 count
Owner
State
State Highway Agency

About this bridge

RTE 906A over Crooked Hill RD is a steel stringer/multi-beam or girder carrying RTE 906A over Crooked Hill RD in Suffolk County, New York. It was built in 1991, so it is 34 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 6 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 13,352 vehicles a day, roughly 9% of them trucks, projected to reach 15,405 by 2041. The structure is 84 ft (25.6 m) long and 54 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesRTE 906A
CrossesCrooked Hill RD
Location2.9 MI E JCT SH231 & I495
RouteState Highway 906A
CountySuffolk County
StateNew York
Coordinates40.8046, -73.28737
Functional classUrban Other Principal 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89 US tons
Inventory rating53 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length84 ft (25.6 m)
Longest span79 ft (24 m)
Deck width54 ft (16.6 m)
Roadway width52 ft (15.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,352 (2020)
Projected traffic15,405 by 2041
Trucks9%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

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$5.7 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was RTE 906A over Crooked Hill RD built?

It was built in 1991, making it 34 years old in 2025.

What condition is RTE 906A over Crooked Hill RD 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 April 2023.

How much traffic does RTE 906A over Crooked Hill RD carry?

About 13,352 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is RTE 906A over Crooked Hill RD?

The structure is 84 ft (25.6 m) long with a longest span of 79 ft (24 m) and a deck 54 ft wide.

Who owns RTE 906A over Crooked Hill RD?

It is owned by the State Highway Agency.