US Bridges

Route 8 over SR 728 (derby Avenue)

Fair

New Haven County, Connecticut · .1 MI N of Exit 21 RTE 8N · Structure no. 00585

Built
1961
64 years old, rebuilt 1989
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
205 ft
3 main spans
Daily traffic
53,800
2021 count
Owner
State
State Highway Agency

About this bridge

Route 8 over SR 728 (derby Avenue) is a steel continuous stringer/multi-beam or girder carrying Route 8 over SR 728 (derby Avenue) in New Haven County, Connecticut. It was built in 1961 and reconstructed in 1989, 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 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 53,800 vehicles a day, roughly 9% of them trucks, projected to reach 79,941 by 2041. The structure is 205 ft (62.5 m) long and 84 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesRoute 8
CrossesSR 728 (derby Avenue)
Location.1 MI N of Exit 21 RTE 8N
RouteState Highway 8
CountyNew Haven County
StateConnecticut
Coordinates41.3817, -73.07941
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating27.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length205 ft (62.5 m)
Longest span88 ft (26.8 m)
Deck width84 ft (25.5 m)
Roadway width75 ft (22.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic53,800 (2021)
Projected traffic79,941 by 2041
Trucks9%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemYes

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 Route 8 over SR 728 (derby Avenue) built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1989.

What condition is Route 8 over SR 728 (derby Avenue) 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 Route 8 over SR 728 (derby Avenue) carry?

About 53,800 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is Route 8 over SR 728 (derby Avenue)?

The structure is 205 ft (62.5 m) long with a longest span of 88 ft (26.8 m) and a deck 84 ft wide.

Who owns Route 8 over SR 728 (derby Avenue)?

It is owned by the State Highway Agency.