US Bridges

Marion Road over Interstate 84

Fair

New Haven County, Connecticut · 1.8 MI E Route 70 · Structure no. 01231

Built
1961
64 years old, rebuilt 1994
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
179 ft
2 main spans
Daily traffic
3,600
2019 count
Owner
State
State Highway Agency

About this bridge

Marion Road over Interstate 84 is a steel stringer/multi-beam or girder carrying Marion Road over Interstate 84 in New Haven County, Connecticut. It was built in 1961 and reconstructed in 1994, so it is 64 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 3,600 vehicles a day, roughly 4% of them trucks, projected to reach 5,349 by 2039. The structure is 179 ft (54.6 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMarion Road
CrossesInterstate 84
Location1.8 MI E Route 70
RouteCity Street 0
CountyNew Haven County
StateConnecticut
Coordinates41.55648, -72.92571
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating71.8 US tons
Inventory rating43.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length179 ft (54.6 m)
Longest span87 ft (26.5 m)
Deck width39 ft (11.9 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,600 (2019)
Projected traffic5,349 by 2039
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
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 Marion Road over Interstate 84 built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1994.

What condition is Marion Road over Interstate 84 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 Marion Road over Interstate 84 carry?

About 3,600 vehicles per day (2019 count), of which roughly 4% are trucks.

How long is Marion Road over Interstate 84?

The structure is 179 ft (54.6 m) long with a longest span of 87 ft (26.5 m) and a deck 39 ft wide.

Who owns Marion Road over Interstate 84?

It is owned by the State Highway Agency.