US Bridges

Christine Lake RD over Christine Lake Outlet

Good

Coos County, New Hampshire · 0.8 MI N Nh 110 Via INV60 · Structure no. 024000790011100

Built
1940
85 years old, rebuilt 1996
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
23 ft
1 main span
Daily traffic
96
2023 count
Owner
State
State Highway Agency

About this bridge

Christine Lake RD over Christine Lake Outlet is a steel stringer/multi-beam or girder carrying Christine Lake RD over Christine Lake Outlet in Coos County, New Hampshire. It was built in 1940 and reconstructed in 1996, so it is 85 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 good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 96 vehicles a day, roughly 4% of them trucks, projected to reach 142 by 2043. The structure is 23 ft (7 m) long and 22 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesChristine Lake RD
CrossesChristine Lake Outlet
Location0.8 MI N Nh 110 Via INV60
RouteState Highway 0
Coordinates44.62616, -71.3896
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating94.5 US tons
Inventory rating56.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length23 ft (7 m)
Longest span18 ft (5.5 m)
Deck width22 ft (6.6 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic96 (2023)
Projected traffic142 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 Christine Lake RD over Christine Lake Outlet built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1996.

What condition is Christine Lake RD over Christine 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 April 2024.

How much traffic does Christine Lake RD over Christine Lake Outlet carry?

About 96 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Christine Lake RD over Christine Lake Outlet?

The structure is 23 ft (7 m) long with a longest span of 18 ft (5.5 m) and a deck 22 ft wide.

Who owns Christine Lake RD over Christine Lake Outlet?

It is owned by the State Highway Agency.