US Bridges

Nh 11 over Pleasant Stream

Fair

Merrimack County, New Hampshire · .3 MI from Wilmot T.L. · Structure no. 000800440008800

Built
1959
66 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
104 ft
2 main spans
Daily traffic
5,115
2023 count
Owner
State
State Highway Agency

About this bridge

Nh 11 over Pleasant Stream is a steel stringer/multi-beam or girder carrying Nh 11 over Pleasant Stream in Merrimack County, New Hampshire. It was built in 1959, so it is 66 years old, older than the New Hampshire average of 56.9 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 5,115 vehicles a day, roughly 7% of them trucks, projected to reach 7,570 by 2043. The structure is 104 ft (31.7 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNh 11
CrossesPleasant Stream
Location.3 MI from Wilmot T.L.
RouteState Highway 11
CountyMerrimack County
StateNew Hampshire
Coordinates43.42682, -71.87419
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
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 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 rating40.3 US tons
Inventory rating24.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length104 ft (31.7 m)
Longest span49 ft (14.9 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,115 (2023)
Projected traffic7,570 by 2043
Trucks7%
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$314,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nh 11 over Pleasant Stream built?

It was built in 1959, making it 66 years old in 2025.

What condition is Nh 11 over Pleasant Stream 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 2024.

How much traffic does Nh 11 over Pleasant Stream carry?

About 5,115 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Nh 11 over Pleasant Stream?

The structure is 104 ft (31.7 m) long with a longest span of 49 ft (14.9 m) and a deck 43 ft wide.

Who owns Nh 11 over Pleasant Stream?

It is owned by the State Highway Agency.