US Bridges

Nh 16 SP Tpk NB over Bmrr

Fair

Strafford County, New Hampshire · .4 Mi. from JCT Rt 9 · Structure no. 006501130011200

Built
1957
68 years old, rebuilt 1992
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
145 ft
3 main spans
Daily traffic
22,560
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

Nh 16 SP Tpk NB over Bmrr is a steel continuous stringer/multi-beam or girder carrying Nh 16 SP Tpk NB 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 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 22,560 vehicles a day, roughly 8% of them trucks, projected to reach 33,388 by 2043. The structure is 145 ft (44.2 m) long and 47 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesNh 16 SP Tpk NB
CrossesBmrr
Location.4 Mi. from JCT Rt 9
RouteState Highway 16
CountyStrafford County
StateNew Hampshire
Coordinates43.19065, -70.89156
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
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 geometry2: Basically intolerable, requiring high priority of replacement
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 length145 ft (44.2 m)
Longest span55 ft (16.8 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,560 (2023)
Projected traffic33,388 by 2043
Trucks8%
Lanes on structure3
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 NB 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 NB over Bmrr 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 April 2023.

How much traffic does Nh 16 SP Tpk NB over Bmrr carry?

About 22,560 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Nh 16 SP Tpk NB over Bmrr?

The structure is 145 ft (44.2 m) long with a longest span of 55 ft (16.8 m) and a deck 47 ft wide.

Who owns Nh 16 SP Tpk NB over Bmrr?

It is owned by the State Toll Authority.