US Bridges

Nh 11 over Connecticut River

Fair

Windsor County, Vermont · Nh Vt State Line · Structure no. 101418B08314181

Built
1900
125 years old, rebuilt 2016
Condition
Fair
inspected October 2024
Type
Truss - Thru
Steel
Length
500 ft
3 main spans
Daily traffic
6,958
2021 count
Owner
State
State Highway Agency

About this bridge

Nh 11 over Connecticut River is a steel truss - thru carrying Nh 11 over Connecticut River in Windsor County, Vermont. It was built in 1900 and reconstructed in 2016, so it is 125 years old, older than the Vermont average of 60.8 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 6,958 vehicles a day, roughly 4% of them trucks, projected to reach 10,297 by 2041. The structure is 500 ft (152.4 m) long and 22 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNh 11
CrossesConnecticut River
LocationNh Vt State Line
CountyWindsor County
StateVermont
Coordinates43.26041, -72.42721
Functional classRural Major 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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61 US tons
Inventory rating36 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length500 ft (152.4 m)
Longest span165 ft (50.3 m)
Deck width22 ft (6.7 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deck16 ft (5 m)

Traffic and service

Average daily traffic6,958 (2021)
Projected traffic10,297 by 2041
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nh 11 over Connecticut River built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 2016.

What condition is Nh 11 over Connecticut 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 October 2024.

How much traffic does Nh 11 over Connecticut River carry?

About 6,958 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is Nh 11 over Connecticut River?

The structure is 500 ft (152.4 m) long with a longest span of 165 ft (50.3 m) and a deck 22 ft wide.

Who owns Nh 11 over Connecticut River?

It is owned by the State Highway Agency.