US Bridges

Interstate 84 WB over Route 172

Fair

New Haven County, Connecticut · Exit 14 · Structure no. 01151

Built
1963
62 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
131 ft
3 main spans
Daily traffic
33,000
2021 count
Owner
State
State Highway Agency

About this bridge

Interstate 84 WB over Route 172 is a steel stringer/multi-beam or girder carrying Interstate 84 WB over Route 172 in New Haven County, Connecticut. It was built in 1963, so it is 62 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 33,000 vehicles a day, roughly 14% of them trucks, projected to reach 49,035 by 2041. The structure is 131 ft (39.9 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesInterstate 84 WB
CrossesRoute 172
LocationExit 14
RouteInterstate 84
Coordinates41.45834, -73.23451
Functional classRural 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.3 US tons
Inventory rating45.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length131 ft (39.9 m)
Longest span54 ft (16.5 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33,000 (2021)
Projected traffic49,035 by 2041
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 WB over Route 172 built?

It was built in 1963, making it 62 years old in 2025.

What condition is Interstate 84 WB over Route 172 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 August 2024.

How much traffic does Interstate 84 WB over Route 172 carry?

About 33,000 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is Interstate 84 WB over Route 172?

The structure is 131 ft (39.9 m) long with a longest span of 54 ft (16.5 m) and a deck 44 ft wide.

Who owns Interstate 84 WB over Route 172?

It is owned by the State Highway Agency.