US Bridges

NH103 over Lake Todd Outlet

Fair

Merrimack County, New Hampshire · 0.1 MI from Newbury Tl · Structure no. 002801270015800

Built
1967
58 years old, rebuilt 2002
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
70 ft
1 main span
Daily traffic
4,633
2023 count
Owner
State
State Highway Agency

About this bridge

NH103 over Lake Todd Outlet is a steel stringer/multi-beam or girder carrying NH103 over Lake Todd Outlet in Merrimack County, New Hampshire. It was built in 1967 and reconstructed in 2002, so it is 58 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 4,633 vehicles a day, roughly 4% of them trucks, projected to reach 6,856 by 2043. The structure is 70 ft (21.3 m) long and 50 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNH103
CrossesLake Todd Outlet
Location0.1 MI from Newbury Tl
RouteState Highway 103
CountyMerrimack County
StateNew Hampshire
Coordinates43.27399, -71.96673
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating33 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length70 ft (21.3 m)
Longest span66 ft (20.1 m)
Deck width50 ft (15.1 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,633 (2023)
Projected traffic6,856 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 NH103 over Lake Todd Outlet built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2002.

What condition is NH103 over Lake Todd Outlet 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 April 2024.

How much traffic does NH103 over Lake Todd Outlet carry?

About 4,633 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is NH103 over Lake Todd Outlet?

The structure is 70 ft (21.3 m) long with a longest span of 66 ft (20.1 m) and a deck 50 ft wide.

Who owns NH103 over Lake Todd Outlet?

It is owned by the State Highway Agency.