US Bridges

Cross Mill Road over Winnipesaukee River

Good

Merrimack County, New Hampshire · At Northfield-Franklin T · Structure no. 008801840012700

Built
1988
37 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
187 ft
2 main spans
Daily traffic
2,602
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Cross Mill Road over Winnipesaukee River is a steel stringer/multi-beam or girder carrying Cross Mill Road over Winnipesaukee River in Merrimack County, New Hampshire. It was built in 1988, so it is 37 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 2,602 vehicles a day, roughly 4% of them trucks, projected to reach 3,850 by 2043. The structure is 187 ft (57 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesCross Mill Road
CrossesWinnipesaukee River
LocationAt Northfield-Franklin T
RouteCity Street 0
Coordinates43.44342, -71.62242
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96 US tons
Inventory rating50 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length187 ft (57 m)
Longest span92 ft (28 m)
Deck width31 ft (9.3 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,602 (2023)
Projected traffic3,850 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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Cross Mill Road over Winnipesaukee River built?

It was built in 1988, making it 37 years old in 2025.

What condition is Cross Mill Road over Winnipesaukee River 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 2024.

How much traffic does Cross Mill Road over Winnipesaukee River carry?

About 2,602 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Cross Mill Road over Winnipesaukee River?

The structure is 187 ft (57 m) long with a longest span of 92 ft (28 m) and a deck 31 ft wide.

Who owns Cross Mill Road over Winnipesaukee River?

It is owned by the City or Municipal Highway Agency.