US Bridges

US302 NH113 over Conway Lake Outlet

Good

Carroll County, New Hampshire · 2.6 Mi. Fryberg Me S/L · Structure no. 005401570013700

Built
2021
4 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
123 ft
1 main span
Daily traffic
11,632
2023 count
Owner
State
State Highway Agency

About this bridge

US302 NH113 over Conway Lake Outlet is a steel stringer/multi-beam or girder carrying US302 NH113 over Conway Lake Outlet in Carroll County, New Hampshire. It was built in 2021, so it is 4 years old, younger than the New Hampshire average of 56.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 11,632 vehicles a day, roughly 7% of them trucks, projected to reach 17,215 by 2043. The structure is 123 ft (37.4 m) long and 43 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesUS302 NH113
CrossesConway Lake Outlet
Location2.6 Mi. Fryberg Me S/L
RouteU.S. Route 302
CountyCarroll County
StateNew Hampshire
Coordinates43.99173, -71.04733
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure9 ExcellentNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.9 US tons
Inventory rating58.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length123 ft (37.4 m)
Longest span117 ft (35.8 m)
Deck width43 ft (13.1 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,632 (2023)
Projected traffic17,215 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 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 US302 NH113 over Conway Lake Outlet built?

It was built in 2021, making it 4 years old in 2025.

What condition is US302 NH113 over Conway Lake Outlet in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does US302 NH113 over Conway Lake Outlet carry?

About 11,632 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is US302 NH113 over Conway Lake Outlet?

The structure is 123 ft (37.4 m) long with a longest span of 117 ft (35.8 m) and a deck 43 ft wide.

Who owns US302 NH113 over Conway Lake Outlet?

It is owned by the State Highway Agency.