US Bridges

Route 8 over SR 847 - South Main St.

Fair

New Haven County, Connecticut · 0.1 Mile North of Exit 29 · Structure no. 03175

Built
1965
60 years old, rebuilt 1995
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
241 ft
3 main spans
Daily traffic
50,700
2018 count
Owner
State
State Highway Agency

About this bridge

Route 8 over SR 847 - South Main St. is a steel stringer/multi-beam or girder carrying Route 8 over SR 847 - South Main St. in New Haven County, Connecticut. It was built in 1965 and reconstructed in 1995, so it is 60 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 50,700 vehicles a day, roughly 6% of them trucks, projected to reach 75,335 by 2038. The structure is 241 ft (73.5 m) long and 92 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesRoute 8
CrossesSR 847 - South Main St.
Location0.1 Mile North of Exit 29
RouteState Highway 8
CountyNew Haven County
StateConnecticut
Coordinates41.51334, -73.04867
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
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 inspectionJune 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 rating51 US tons
Inventory rating39.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length241 ft (73.5 m)
Longest span134 ft (40.8 m)
Deck width92 ft (27.9 m)
Roadway width84 ft (25.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50,700 (2018)
Projected traffic75,335 by 2038
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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 847 - South Main St. built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1995.

What condition is Route 8 over SR 847 - South Main St. 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 June 2024.

How much traffic does Route 8 over SR 847 - South Main St. carry?

About 50,700 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is Route 8 over SR 847 - South Main St.?

The structure is 241 ft (73.5 m) long with a longest span of 134 ft (40.8 m) and a deck 92 ft wide.

Who owns Route 8 over SR 847 - South Main St.?

It is owned by the State Highway Agency.