US Bridges

Forbes Mtn Road over Wild Meadow Brook

Fair

Merrimack County, New Hampshire · 2.2 MI FR North RD · Structure no. 005801030010000

Built
1950
75 years old, rebuilt 2007
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
27 ft
1 main span
Daily traffic
96
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Forbes Mtn Road over Wild Meadow Brook is a steel stringer/multi-beam or girder carrying Forbes Mtn Road over Wild Meadow Brook in Merrimack County, New Hampshire. It was built in 1950 and reconstructed in 2007, so it is 75 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 96 vehicles a day, projected to reach 142 by 2043. The structure is 27 ft (8.3 m) long and 16 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesForbes Mtn Road
CrossesWild Meadow Brook
Location2.2 MI FR North RD
Coordinates43.55644, -71.86597
Functional classRural 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length27 ft (8.3 m)
Longest span25 ft (7.6 m)
Deck width16 ft (4.8 m)
Roadway width15 ft (4.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic96 (2023)
Projected traffic142 by 2043
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Forbes Mtn Road over Wild Meadow Brook built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 2007.

What condition is Forbes Mtn Road over Wild Meadow 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 July 2024.

How much traffic does Forbes Mtn Road over Wild Meadow Brook carry?

About 96 vehicles per day (2023 count).

How long is Forbes Mtn Road over Wild Meadow Brook?

The structure is 27 ft (8.3 m) long with a longest span of 25 ft (7.6 m) and a deck 16 ft wide.

Who owns Forbes Mtn Road over Wild Meadow Brook?

It is owned by the City or Municipal Highway Agency.