US Bridges

Unquowa Road over Metro North Railroad

Fair

Fairfield County, Connecticut · 0.1 MI N of US Route 1 · Structure no. 05788

Built
1989
36 years old
Condition
Fair
inspected December 2022
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
234 ft
3 main spans
Daily traffic
5,900
2020 count
Owner
Unknown
Unknown

About this bridge

Unquowa Road over Metro North Railroad is a prestressed concrete box beam or girders - multiple carrying Unquowa Road over Metro North Railroad in Fairfield County, Connecticut. It was built in 1989, so it is 36 years old, younger 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 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 5,900 vehicles a day, roughly 6% of them trucks, projected to reach 8,767 by 2040. The structure is 234 ft (71.3 m) long and 48 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUnquowa Road
CrossesMetro North Railroad
Location0.1 MI N of US Route 1
RouteCity Street 0
CountyFairfield County
StateConnecticut
Coordinates41.14303, -73.25761
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckOther
Main spans3
Design loadHS 20
Structure length234 ft (71.3 m)
Longest span76 ft (23.3 m)
Deck width48 ft (14.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,900 (2020)
Projected traffic8,767 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 Unquowa Road over Metro North Railroad built?

It was built in 1989, making it 36 years old in 2025.

What condition is Unquowa Road 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 2022.

How much traffic does Unquowa Road over Metro North Railroad carry?

About 5,900 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is Unquowa Road over Metro North Railroad?

The structure is 234 ft (71.3 m) long with a longest span of 76 ft (23.3 m) and a deck 48 ft wide.

Who owns Unquowa Road over Metro North Railroad?

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