US Bridges

Route 354 over Deep River Brook

Good

New London County, Connecticut · 3.5 MI W of Route 82 · Structure no. 01597

Built
1961
64 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete Continuous
Length
27 ft
2 main spans
Daily traffic
2,100
2021 count
Owner
State
State Highway Agency

About this bridge

Route 354 over Deep River Brook is a concrete continuous culvert carrying Route 354 over Deep River Brook in New London County, Connecticut. It was built in 1961, 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,100 vehicles a day, roughly 3% of them trucks, projected to reach 3,120 by 2041. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesRoute 354
CrossesDeep River Brook
Location3.5 MI W of Route 82
RouteState Highway 354
Coordinates41.53289, -72.26784
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length27 ft (8.2 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,100 (2021)
Projected traffic3,120 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Route 354 over Deep River Brook built?

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

What condition is Route 354 over Deep River Brook in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does Route 354 over Deep River Brook carry?

About 2,100 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Route 354 over Deep River Brook?

The structure is 27 ft (8.2 m) long with a longest span of 13 ft (4 m).

Who owns Route 354 over Deep River Brook?

It is owned by the State Highway Agency.