US Bridges

Nh 75 over Nhncrr

Fair

Strafford County, New Hampshire · 2.7 MI N of Farmington Tl · Structure no. 017302190012400

Built
1978
47 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
70 ft
1 main span
Daily traffic
3,708
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

Nh 75 over Nhncrr is a steel stringer/multi-beam or girder carrying Nh 75 over Nhncrr in Strafford County, New Hampshire. It was built in 1978, so it is 47 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 3,708 vehicles a day, roughly 4% of them trucks, projected to reach 5,487 by 2043. The structure is 70 ft (21.3 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNh 75
CrossesNhncrr
Location2.7 MI N of Farmington Tl
RouteState Highway 75
CountyStrafford County
StateNew Hampshire
Coordinates43.39651, -70.9941
Functional classRural Major Collector

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.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.9 US tons
Inventory rating35.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length70 ft (21.3 m)
Longest span65 ft (19.8 m)
Deck width47 ft (14.2 m)
Roadway width43 ft (13 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,708 (2023)
Projected traffic5,487 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 75 over Nhncrr built?

It was built in 1978, making it 47 years old in 2025.

What condition is Nh 75 over Nhncrr 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 June 2023.

How much traffic does Nh 75 over Nhncrr carry?

About 3,708 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Nh 75 over Nhncrr?

The structure is 70 ft (21.3 m) long with a longest span of 65 ft (19.8 m) and a deck 47 ft wide.

Who owns Nh 75 over Nhncrr?

It is owned by the State Toll Authority.