US Bridges

No Data Entered over Jackman Brook

Fair

Grafton County, New Hampshire · Map 36 · Structure no. 092204000001103

Built
1993
32 years old
Condition
Fair
inspected September 2024
Type
Slab
Wood or Timber
Length
33 ft
1 main span
Daily traffic
99
Owner
Federal
U.S. Forest Service

About this bridge

No Data Entered over Jackman Brook is a wood or timber slab carrying No Data Entered over Jackman Brook in Grafton County, New Hampshire. It was built in 1993, so it is 32 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 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 99 vehicles a day, projected to reach 148 by 2045. The structure is 33 ft (10.2 m) long and 15 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

Location

Open in Google Maps
CarriesNo Data Entered
CrossesJackman Brook
LocationMap 36
RouteFederal Lands Road 156
CountyGrafton County
StateNew Hampshire
Coordinates43.99428, -71.75021
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating83.2 US tons
Inventory rating60.4 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 25 or greater
Structure length33 ft (10.2 m)
Longest span32 ft (9.8 m)
Deck width15 ft (4.7 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic99 (—)
Projected traffic148 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was No Data Entered over Jackman Brook built?

It was built in 1993, making it 32 years old in 2025.

What condition is No Data Entered over Jackman 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 September 2024.

How much traffic does No Data Entered over Jackman Brook carry?

About 99 vehicles per day (latest count).

How long is No Data Entered over Jackman Brook?

The structure is 33 ft (10.2 m) long with a longest span of 32 ft (9.8 m) and a deck 15 ft wide.

Who owns No Data Entered over Jackman Brook?

It is owned by the U.S. Forest Service.