US Bridges

Montauk Highway over Lirr-Montauk Brch

Fair

Suffolk County, New York · .2 MI SE JCT SH 27 & SH 2 · Structure no. 000000003019510

Built
1913
112 years old
Condition
Fair
inspected July 2024
Type
Other
Steel
Length
109 ft
3 main spans
Daily traffic
15,839
2019 count
Owner
County
County Highway Agency

About this bridge

Montauk Highway over Lirr-Montauk Brch is a steel other carrying Montauk Highway over Lirr-Montauk Brch in Suffolk County, New York. It was built in 1913, so it is 112 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 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 15,839 vehicles a day, roughly 2% of them trucks, projected to reach 19,241 by 2041. The structure is 109 ft (33.2 m) long and 39 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesMontauk Highway
CrossesLirr-Montauk Brch
Location.2 MI SE JCT SH 27 & SH 2
RouteCounty Highway 0
Coordinates40.74673, -73.1437
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating27 US tons
Inventory rating12 US tons

Structure

Structure typeOther
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length109 ft (33.2 m)
Longest span33 ft (10 m)
Deck width39 ft (11.8 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,839 (2019)
Projected traffic19,241 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
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$7.5 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Montauk Highway over Lirr-Montauk Brch built?

It was built in 1913, making it 112 years old in 2025.

What condition is Montauk Highway over Lirr-Montauk Brch 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 Montauk Highway over Lirr-Montauk Brch carry?

About 15,839 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is Montauk Highway over Lirr-Montauk Brch?

The structure is 109 ft (33.2 m) long with a longest span of 33 ft (10 m) and a deck 39 ft wide.

Who owns Montauk Highway over Lirr-Montauk Brch?

It is owned by the County Highway Agency.