US Bridges

INTERSTATE-84 EB over Dnby Term/Housatonic RR

Fair

Fairfield County, Connecticut · O.5 MI West of US Route 7 · Structure no. 01182

Built
1962
63 years old, rebuilt 1984
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
226 ft
3 main spans
Daily traffic
41,200
2021 count
Owner
State
State Highway Agency

About this bridge

INTERSTATE-84 EB over Dnby Term/Housatonic RR is a steel stringer/multi-beam or girder carrying INTERSTATE-84 EB over Dnby Term/Housatonic RR in Fairfield County, Connecticut. It was built in 1962 and reconstructed in 1984, so it is 63 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 41,200 vehicles a day, roughly 9% of them trucks, projected to reach 61,219 by 2041. The structure is 226 ft (68.8 m) long and 59 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesINTERSTATE-84 EB
CrossesDnby Term/Housatonic RR
LocationO.5 MI West of US Route 7
RouteInterstate 84
CountyFairfield County
StateConnecticut
Coordinates41.38396, -73.48184
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
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 inspectionApril 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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.5 US tons
Inventory rating55.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length226 ft (68.8 m)
Longest span83 ft (25.3 m)
Deck width59 ft (18.1 m)
Roadway width55 ft (16.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic41,200 (2021)
Projected traffic61,219 by 2041
Trucks9%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 km)
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was INTERSTATE-84 EB over Dnby Term/Housatonic RR built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1984.

What condition is INTERSTATE-84 EB over Dnby Term/Housatonic RR 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 April 2023.

How much traffic does INTERSTATE-84 EB over Dnby Term/Housatonic RR carry?

About 41,200 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is INTERSTATE-84 EB over Dnby Term/Housatonic RR?

The structure is 226 ft (68.8 m) long with a longest span of 83 ft (25.3 m) and a deck 59 ft wide.

Who owns INTERSTATE-84 EB over Dnby Term/Housatonic RR?

It is owned by the State Highway Agency.