US Bridges

Mechanic Street over Israel River

FairPosted for load

Coos County, New Hampshire · 0.3 MI from US RTE 3 · Structure no. 014101340010700

Built
1862
163 years old, rebuilt 2006
Condition
Fair
inspected October 2024
Type
Truss - Thru
Wood or Timber
Length
94 ft
1 main span
Daily traffic
750
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mechanic Street over Israel River is a wood or timber truss - thru carrying Mechanic Street over Israel River in Coos County, New Hampshire. It was built in 1862 and reconstructed in 2006, so it is 163 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. Its operating status is: posted for load restriction.

It carries about 750 vehicles a day, roughly 4% of them trucks, projected to reach 1,110 by 2043. The structure is 94 ft (28.7 m) long and 20 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMechanic Street
CrossesIsrael River
Location0.3 MI from US RTE 3
Coordinates44.48688, -71.56419
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating5.2 US tons
Inventory rating3.7 US tons

Structure

Structure typeTruss - Thru
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length94 ft (28.7 m)
Longest span80 ft (24.4 m)
Deck width20 ft (6.1 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deck8 ft (2.6 m)

Traffic and service

Average daily traffic750 (2023)
Projected traffic1,110 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 statusEligible 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 Mechanic Street over Israel River built?

It was built in 1862, making it 163 years old in 2025. It was reconstructed in 2006.

What condition is Mechanic Street over Israel River 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 October 2024.

How much traffic does Mechanic Street over Israel River carry?

About 750 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Mechanic Street over Israel River?

The structure is 94 ft (28.7 m) long with a longest span of 80 ft (24.4 m) and a deck 20 ft wide.

Who owns Mechanic Street over Israel River?

It is owned by the City or Municipal Highway Agency.