US Bridges

Longbrook Avenue over Metro North Railroad

Fair

Fairfield County, Connecticut · 300 Ft N of US Route 1 · Structure no. 03751

Built
1901
124 years old, rebuilt 1994
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
78 ft
1 main span
Daily traffic
5,146
2023 count
Owner
Unknown
Unknown

About this bridge

Longbrook Avenue over Metro North Railroad is a steel stringer/multi-beam or girder carrying Longbrook Avenue over Metro North Railroad in Fairfield County, Connecticut. It was built in 1901 and reconstructed in 1994, so it is 124 years old, older than the Connecticut average of 56.7 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 5,146 vehicles a day, roughly 2% of them trucks, projected to reach 7,646 by 2043. The structure is 78 ft (23.7 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesLongbrook Avenue
CrossesMetro North Railroad
Location300 Ft N of US Route 1
RouteCity Street 0
Coordinates41.19908, -73.1245
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating66.5 US tons
Inventory rating51.5 US tons

Structure

MaterialSteel
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length78 ft (23.7 m)
Longest span75 ft (22.8 m)
Deck width33 ft (10 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,146 (2023)
Projected traffic7,646 by 2043
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerUnknown
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Longbrook Avenue over Metro North Railroad built?

It was built in 1901, making it 124 years old in 2025. It was reconstructed in 1994.

What condition is Longbrook Avenue over Metro North Railroad 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 December 2024.

How much traffic does Longbrook Avenue over Metro North Railroad carry?

About 5,146 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Longbrook Avenue over Metro North Railroad?

The structure is 78 ft (23.7 m) long with a longest span of 75 ft (22.8 m) and a deck 33 ft wide.

Who owns Longbrook Avenue over Metro North Railroad?

It is owned by the Unknown and maintained by the State Highway Agency.