US Bridges

Route 8 over Prospect Street

Fair

Fairfield County, Connecticut · 0.4 MI N of I-95 · Structure no. 03538

Built
1968
57 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
67 ft
1 main span
Daily traffic
101,700
2021 count
Owner
State
State Highway Agency

About this bridge

Route 8 over Prospect Street is a steel stringer/multi-beam or girder carrying Route 8 over Prospect Street in Fairfield County, Connecticut. It was built in 1968, so it is 57 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 101,700 vehicles a day, roughly 8% of them trucks, projected to reach 151,116 by 2041. The structure is 67 ft (20.4 m) long and 113 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesRoute 8
CrossesProspect Street
Location0.4 MI N of I-95
RouteState Highway 8
Coordinates41.17282, -73.19321
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating57.1 US tons
Inventory rating44 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length67 ft (20.4 m)
Longest span62 ft (18.9 m)
Deck width113 ft (34.4 m)
Roadway width107 ft (32.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic101,700 (2021)
Projected traffic151,116 by 2041
Trucks8%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 Prospect Street built?

It was built in 1968, making it 57 years old in 2025.

What condition is Route 8 over Prospect Street 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 2024.

How much traffic does Route 8 over Prospect Street carry?

About 101,700 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is Route 8 over Prospect Street?

The structure is 67 ft (20.4 m) long with a longest span of 62 ft (18.9 m) and a deck 113 ft wide.

Who owns Route 8 over Prospect Street?

It is owned by the State Highway Agency.