US Bridges

RTE 231 over 908M908M07021063 RTE 90

Good

Suffolk County, New York · JCT SH 231 & Ssp · Structure no. 000000001056250

Built
1968
57 years old
Condition
Good
inspected March 2024
Type
Frame
Concrete Continuous
Length
135 ft
2 main spans
Daily traffic
27,859
2020 count
Owner
State
State Highway Agency

About this bridge

RTE 231 over 908M908M07021063 RTE 90 is a concrete continuous frame carrying RTE 231 over 908M908M07021063 RTE 90 in Suffolk 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 27,859 vehicles a day, roughly 6% of them trucks, projected to reach 33,138 by 2041. The structure is 135 ft (41.1 m) long and 61 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesRTE 231
Crosses908M908M07021063 RTE 90
LocationJCT SH 231 & Ssp
RouteState Highway 231
CountySuffolk County
StateNew York
Coordinates40.73195, -73.32086
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment7: Better than present minimum criteria
Operating rating88 US tons
Inventory rating47 US tons

Structure

Structure typeFrame
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length135 ft (41.1 m)
Longest span64 ft (19.5 m)
Deck width61 ft (18.6 m)
Roadway width49 ft (14.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,859 (2020)
Projected traffic33,138 by 2041
Trucks6%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 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$7 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was RTE 231 over 908M908M07021063 RTE 90 built?

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

What condition is RTE 231 over 908M908M07021063 RTE 90 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 March 2024.

How much traffic does RTE 231 over 908M908M07021063 RTE 90 carry?

About 27,859 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is RTE 231 over 908M908M07021063 RTE 90?

The structure is 135 ft (41.1 m) long with a longest span of 64 ft (19.5 m) and a deck 61 ft wide.

Who owns RTE 231 over 908M908M07021063 RTE 90?

It is owned by the State Highway Agency.