US Bridges

I-89 Nh 10 over Brook Atv Trail

Fair

Grafton County, New Hampshire · 0.4MI S Lebanon T/L · Structure no. 007700630010000

Built
1959
66 years old, rebuilt 2005
Condition
Fair
inspected May 2023
Type
Culvert
Steel
Length
22 ft
2 main spans
Daily traffic
25,062
2023 count
Owner
State
State Highway Agency

About this bridge

I-89 Nh 10 over Brook Atv Trail is a steel culvert carrying I-89 Nh 10 over Brook Atv Trail in Grafton County, New Hampshire. It was built in 1959 and reconstructed in 2005, so it is 66 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 25,062 vehicles a day, roughly 9% of them trucks, projected to reach 37,091 by 2043. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 24.9 mi (40 km).

Location

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CarriesI-89 Nh 10
CrossesBrook Atv Trail
Location0.4MI S Lebanon T/L
RouteInterstate 89
CountyGrafton County
StateNew Hampshire
Coordinates43.60796, -72.18652
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating81 US tons
Inventory rating48.5 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span11 ft (3.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,062 (2023)
Projected traffic37,091 by 2043
Trucks9%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 I-89 Nh 10 over Brook Atv Trail built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 2005.

What condition is I-89 Nh 10 over Brook Atv Trail 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 May 2023.

How much traffic does I-89 Nh 10 over Brook Atv Trail carry?

About 25,062 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is I-89 Nh 10 over Brook Atv Trail?

The structure is 22 ft (6.7 m) long with a longest span of 11 ft (3.3 m).

Who owns I-89 Nh 10 over Brook Atv Trail?

It is owned by the State Highway Agency.