US Bridges

Nh 16 SP Tpk SB over Bmrr

Good

Strafford County, New Hampshire · .4 Mi. from Jct. Rt 9 · Structure no. 006501130011100

Built
1957
68 years old, rebuilt 1992
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
146 ft
3 main spans
Daily traffic
23,607
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

Nh 16 SP Tpk SB over Bmrr is a steel continuous stringer/multi-beam or girder carrying Nh 16 SP Tpk SB over Bmrr in Strafford County, New Hampshire. It was built in 1957 and reconstructed in 1992, so it is 68 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 23,607 vehicles a day, roughly 8% of them trucks, projected to reach 34,938 by 2043. The structure is 146 ft (44.5 m) long and 50 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNh 16 SP Tpk SB
CrossesBmrr
Location.4 Mi. from Jct. Rt 9
RouteState Highway 16
CountyStrafford County
StateNew Hampshire
Coordinates43.19054, -70.89171
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length146 ft (44.5 m)
Longest span55 ft (16.8 m)
Deck width50 ft (15.3 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,607 (2023)
Projected traffic34,938 by 2043
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
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)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nh 16 SP Tpk SB over Bmrr built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1992.

What condition is Nh 16 SP Tpk SB 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 16 SP Tpk SB over Bmrr carry?

About 23,607 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Nh 16 SP Tpk SB over Bmrr?

The structure is 146 ft (44.5 m) long with a longest span of 55 ft (16.8 m) and a deck 50 ft wide.

Who owns Nh 16 SP Tpk SB over Bmrr?

It is owned by the State Toll Authority.