US Bridges

Marvin Ridge Road over Route 15

Fair

Fairfield County, Connecticut · 0.3 Mi.W.Of Norwalk T.L. · Structure no. 05811

Built
1989
36 years old
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
76 ft
1 main span
Daily traffic
1,000
2020 count
Owner
State
State Highway Agency

About this bridge

Marvin Ridge Road over Route 15 is a prestressed concrete box beam or girders - multiple carrying Marvin Ridge Road over Route 15 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 1,000 vehicles a day, roughly 3% of them trucks, projected to reach 1,486 by 2040. The structure is 76 ft (23.2 m) long and 35 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMarvin Ridge Road
CrossesRoute 15
Location0.3 Mi.W.Of Norwalk T.L.
RouteCity Street 0
CountyFairfield County
StateConnecticut
Coordinates41.12704, -73.46748
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
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.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating57.9 US tons
Inventory rating44.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length76 ft (23.2 m)
Longest span71 ft (21.6 m)
Deck width35 ft (10.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2020)
Projected traffic1,486 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Marvin Ridge Road over Route 15 built?

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

What condition is Marvin Ridge Road over Route 15 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 June 2024.

How much traffic does Marvin Ridge Road over Route 15 carry?

About 1,000 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is Marvin Ridge Road over Route 15?

The structure is 76 ft (23.2 m) long with a longest span of 71 ft (21.6 m) and a deck 35 ft wide.

Who owns Marvin Ridge Road over Route 15?

It is owned by the State Highway Agency.