US Bridges

I-93 SB over E Br Pemigewasset River

Good

Grafton County, New Hampshire · 0.5 MI Lincoln Tl · Structure no. 028401760016000

Built
1972
53 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
283 ft
3 main spans
Daily traffic
7,285
2023 count
Owner
State
State Highway Agency

About this bridge

I-93 SB over E Br Pemigewasset River is a steel continuous stringer/multi-beam or girder carrying I-93 SB over E Br Pemigewasset River in Grafton County, New Hampshire. It was built in 1972, so it is 53 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 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 7,285 vehicles a day, roughly 9% of them trucks, projected to reach 10,781 by 2043. The structure is 283 ft (86.3 m) long and 45 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesI-93 SB
CrossesE Br Pemigewasset River
Location0.5 MI Lincoln Tl
RouteInterstate 93
CountyGrafton County
StateNew Hampshire
Coordinates44.03072, -71.67891
Functional classRural Principal Arterial - Interstate

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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.4 US tons
Inventory rating33.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length283 ft (86.3 m)
Longest span106 ft (32.3 m)
Deck width45 ft (13.7 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,285 (2023)
Projected traffic10,781 by 2043
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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-93 SB over E Br Pemigewasset River built?

It was built in 1972, making it 53 years old in 2025.

What condition is I-93 SB over E Br Pemigewasset River 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 July 2023.

How much traffic does I-93 SB over E Br Pemigewasset River carry?

About 7,285 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is I-93 SB over E Br Pemigewasset River?

The structure is 283 ft (86.3 m) long with a longest span of 106 ft (32.3 m) and a deck 45 ft wide.

Who owns I-93 SB over E Br Pemigewasset River?

It is owned by the State Highway Agency.