US Bridges

Nh 9 over Bmrr

Good

Strafford County, New Hampshire · 2 Mi. from Madbury TL6 · Structure no. 006501090010600

Built
2011
14 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
126 ft
3 main spans
Daily traffic
9,696
2023 count
Owner
State
State Highway Agency

About this bridge

Nh 9 over Bmrr is a steel continuous stringer/multi-beam or girder carrying Nh 9 over Bmrr in Strafford County, New Hampshire. It was built in 2011, so it is 14 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 9,696 vehicles a day, roughly 5% of them trucks, projected to reach 14,350 by 2043. The structure is 126 ft (38.4 m) long and 53 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesNh 9
CrossesBmrr
Location2 Mi. from Madbury TL6
RouteState Highway 9
Coordinates43.18688, -70.8977
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating79.7 US tons
Inventory rating45.5 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length126 ft (38.4 m)
Longest span56 ft (17.1 m)
Deck width53 ft (16.2 m)
Roadway width45 ft (13.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,696 (2023)
Projected traffic14,350 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

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)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nh 9 over Bmrr built?

It was built in 2011, making it 14 years old in 2025.

What condition is Nh 9 over Bmrr 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 April 2023.

How much traffic does Nh 9 over Bmrr carry?

About 9,696 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Nh 9 over Bmrr?

The structure is 126 ft (38.4 m) long with a longest span of 56 ft (17.1 m) and a deck 53 ft wide.

Who owns Nh 9 over Bmrr?

It is owned by the State Highway Agency.