US Bridges

I-84 Ramps & Loca over Mad River

Fair

New Haven County, Connecticut · 0.1 MI West of Exit 23 EB · Structure no. 04319A

Built
1980
45 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete Continuous
Length
67 ft
2 main spans
Daily traffic
99,800
2021 count
Owner
State
State Highway Agency

About this bridge

I-84 Ramps & Loca over Mad River is a concrete continuous culvert carrying I-84 Ramps & Loca over Mad River in New Haven County, Connecticut. It was built in 1980, so it is 45 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 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 99,800 vehicles a day, roughly 9% of them trucks, projected to reach 148,293 by 2041. The structure is 67 ft (20.4 m) long.

Location

Open in Google Maps
CarriesI-84 Ramps & Loca
CrossesMad River
Location0.1 MI West of Exit 23 EB
RouteInterstate 84
CountyNew Haven County
StateConnecticut
Coordinates41.55151, -73.03455
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length67 ft (20.4 m)
Longest span32 ft (9.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deck16 ft (5 m)

Traffic and service

Average daily traffic99,800 (2021)
Projected traffic148,293 by 2041
Trucks9%
Lanes on structure11
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-84 Ramps & Loca over Mad River built?

It was built in 1980, making it 45 years old in 2025.

What condition is I-84 Ramps & Loca over Mad 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 January 2024.

How much traffic does I-84 Ramps & Loca over Mad River carry?

About 99,800 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is I-84 Ramps & Loca over Mad River?

The structure is 67 ft (20.4 m) long with a longest span of 32 ft (9.8 m).

Who owns I-84 Ramps & Loca over Mad River?

It is owned by the State Highway Agency.