US Bridges

Tunnel Road over Interstate 84

Fair

Fairfield County, Connecticut · 0.8 MI E of Route 25 · Structure no. 01206

Built
1962
63 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
243 ft
4 main spans
Daily traffic
899
2023 count
Owner
State
State Highway Agency

About this bridge

Tunnel Road over Interstate 84 is a steel stringer/multi-beam or girder carrying Tunnel Road over Interstate 84 in Fairfield County, Connecticut. It was built in 1962, 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 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 899 vehicles a day, roughly 4% of them trucks, projected to reach 1,336 by 2043. The structure is 243 ft (74.1 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesTunnel Road
CrossesInterstate 84
Location0.8 MI E of Route 25
RouteCity Street 0
CountyFairfield County
StateConnecticut
Coordinates41.42621, -73.33972
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.7 US tons
Inventory rating35.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length243 ft (74.1 m)
Longest span88 ft (26.8 m)
Deck width40 ft (12.1 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic899 (2023)
Projected traffic1,336 by 2043
Trucks4%
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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Tunnel Road over Interstate 84 built?

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

What condition is Tunnel 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 September 2023.

How much traffic does Tunnel Road over Interstate 84 carry?

About 899 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Tunnel Road over Interstate 84?

The structure is 243 ft (74.1 m) long with a longest span of 88 ft (26.8 m) and a deck 40 ft wide.

Who owns Tunnel Road over Interstate 84?

It is owned by the State Highway Agency.