US Bridges

Route 156 over Lieutenant River

Fair

New London County, Connecticut · 0.5 MI E of I-95 · Structure no. 01392

Built
1961
64 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
140 ft
2 main spans
Daily traffic
7,600
2021 count
Owner
State
State Highway Agency

About this bridge

Route 156 over Lieutenant River is a steel stringer/multi-beam or girder carrying Route 156 over Lieutenant River 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 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 7,600 vehicles a day, roughly 3% of them trucks, projected to reach 11,293 by 2041. The structure is 140 ft (42.6 m) long and 49 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesRoute 156
CrossesLieutenant River
Location0.5 MI E of I-95
RouteState Highway 156
Coordinates41.31399, -72.33701
Functional classUrban Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.2 US tons
Inventory rating70.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length140 ft (42.6 m)
Longest span67 ft (20.4 m)
Deck width49 ft (15 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,600 (2021)
Projected traffic11,293 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 156 over Lieutenant River built?

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

What condition is Route 156 over Lieutenant 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 July 2023.

How much traffic does Route 156 over Lieutenant River carry?

About 7,600 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Route 156 over Lieutenant River?

The structure is 140 ft (42.6 m) long with a longest span of 67 ft (20.4 m) and a deck 49 ft wide.

Who owns Route 156 over Lieutenant River?

It is owned by the State Highway Agency.