US Bridges

Lake Shore Drive over Sucker Brook

Fair

Merrimack County, New Hampshire · .37 Mi. N. of Jct. Nh 11 · Structure no. 008800980012900

Built
1942
83 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
23 ft
1 main span
Daily traffic
370
2023 count
Owner
State
State Highway Agency

About this bridge

Lake Shore Drive over Sucker Brook is a steel stringer/multi-beam or girder carrying Lake Shore Drive over Sucker Brook in Merrimack County, New Hampshire. It was built in 1942, so it is 83 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 370 vehicles a day, roughly 4% of them trucks, projected to reach 547 by 2043. The structure is 23 ft (7 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesLake Shore Drive
CrossesSucker Brook
Location.37 Mi. N. of Jct. Nh 11
RouteState Highway 0
CountyMerrimack County
StateNew Hampshire
Coordinates43.4701, -71.69733
Functional classUrban Local

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.9 US tons
Inventory rating27.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length23 ft (7 m)
Longest span20 ft (6.1 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic370 (2023)
Projected traffic547 by 2043
Trucks4%
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 Lake Shore Drive over Sucker Brook built?

It was built in 1942, making it 83 years old in 2025.

What condition is Lake Shore Drive over Sucker Brook 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 Lake Shore Drive over Sucker Brook carry?

About 370 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Lake Shore Drive over Sucker Brook?

The structure is 23 ft (7 m) long with a longest span of 20 ft (6.1 m) and a deck 28 ft wide.

Who owns Lake Shore Drive over Sucker Brook?

It is owned by the State Highway Agency.