US Bridges

Sunnyside Street over Yantic River

Fair

New London County, Connecticut · 40 Ft East of Franklin RD · Structure no. 04746

Built
1908
117 years old, rebuilt 2020
Condition
Fair
inspected September 2024
Type
Arch - Deck
Masonry
Length
166 ft
2 main spans
Daily traffic
465
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Sunnyside Street over Yantic River is a masonry arch - deck carrying Sunnyside Street over Yantic River in New London County, Connecticut. It was built in 1908 and reconstructed in 2020, so it is 117 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 465 vehicles a day, roughly 2% of them trucks, projected to reach 691 by 2040. The structure is 166 ft (50.6 m) long and 20 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesSunnyside Street
CrossesYantic River
Location40 Ft East of Franklin RD
RouteCity Street 0
Coordinates41.56022, -72.12318
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
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckNot applicable
Main spans2
Design loadUnknown
Structure length166 ft (50.6 m)
Longest span72 ft (21.9 m)
Deck width20 ft (6.2 m)
Roadway width13 ft (4.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic465 (2020)
Projected traffic691 by 2040
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$675,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Sunnyside Street over Yantic River built?

It was built in 1908, making it 117 years old in 2025. It was reconstructed in 2020.

What condition is Sunnyside Street over Yantic River 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 2024.

How much traffic does Sunnyside Street over Yantic River carry?

About 465 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Sunnyside Street over Yantic River?

The structure is 166 ft (50.6 m) long with a longest span of 72 ft (21.9 m) and a deck 20 ft wide.

Who owns Sunnyside Street over Yantic River?

It is owned by the City or Municipal Highway Agency.