US Bridges

Route 11 NB over Eight Mile River

Fair

New London County, Connecticut · 0.5 MI N of Route 82 · Structure no. 02393

Built
1971
54 years old
Condition
Fair
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
98 ft
1 main span
Daily traffic
4,700
2018 count
Owner
State
State Highway Agency

About this bridge

Route 11 NB over Eight Mile River is a prestressed concrete box beam or girders - multiple carrying Route 11 NB over Eight Mile River in New London County, Connecticut. It was built in 1971, so it is 54 years old, younger 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 4,700 vehicles a day, roughly 6% of them trucks, projected to reach 6,984 by 2038. The structure is 98 ft (29.9 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesRoute 11 NB
CrossesEight Mile River
Location0.5 MI N of Route 82
RouteState Highway 11
CountyNew London County
StateConnecticut
Coordinates41.47066, -72.28829
Functional classRural Principal Arterial - Other

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.
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 protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.8 US tons
Inventory rating36.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length98 ft (29.9 m)
Longest span94 ft (28.7 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,700 (2018)
Projected traffic6,984 by 2038
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Route 11 NB over Eight Mile River built?

It was built in 1971, making it 54 years old in 2025.

What condition is Route 11 NB over Eight Mile 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 May 2023.

How much traffic does Route 11 NB over Eight Mile River carry?

About 4,700 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is Route 11 NB over Eight Mile River?

The structure is 98 ft (29.9 m) long with a longest span of 94 ft (28.7 m) and a deck 44 ft wide.

Who owns Route 11 NB over Eight Mile River?

It is owned by the State Highway Agency.