US Bridges

West Glen Drive over Mianus River

Fair

Fairfield County, Connecticut · 250 West of Westover RD · Structure no. 05010

Built
1964
61 years old
Condition
Fair
inspected March 2023
Type
Tee Beam
Prestressed Concrete
Length
63 ft
1 main span
Daily traffic
610
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

West Glen Drive over Mianus River is a prestressed concrete tee beam carrying West Glen Drive over Mianus River in Fairfield County, Connecticut. It was built in 1964, so it is 61 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 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 610 vehicles a day, roughly 2% of them trucks, projected to reach 906 by 2044. The structure is 63 ft (19.2 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesWest Glen Drive
CrossesMianus River
Location250 West of Westover RD
RouteCity Street 0
CountyFairfield County
StateConnecticut
Coordinates41.07449, -73.57622
Functional classUrban Local

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating25 US tons
Inventory rating19.3 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length63 ft (19.2 m)
Longest span60 ft (18.3 m)
Deck width41 ft (12.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic610 (2024)
Projected traffic906 by 2044
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.2 million (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was West Glen Drive over Mianus River built?

It was built in 1964, making it 61 years old in 2025.

What condition is West Glen Drive over Mianus River 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 March 2023.

How much traffic does West Glen Drive over Mianus River carry?

About 610 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is West Glen Drive over Mianus River?

The structure is 63 ft (19.2 m) long with a longest span of 60 ft (18.3 m) and a deck 41 ft wide.

Who owns West Glen Drive over Mianus River?

It is owned by the City or Municipal Highway Agency.