US Bridges

US 3 Nh 25 over Baker River

Fair

Grafton County, New Hampshire · 4.3 MI FM Bridgewater Tl · Structure no. 021601410014300

Built
1930
95 years old, rebuilt 1985
Condition
Fair
inspected June 2023
Type
Truss - Thru
Steel
Length
172 ft
1 main span
Daily traffic
4,355
2023 count
Owner
State
State Highway Agency

About this bridge

US 3 Nh 25 over Baker River is a steel truss - thru carrying US 3 Nh 25 over Baker River in Grafton County, New Hampshire. It was built in 1930 and reconstructed in 1985, so it is 95 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 5 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 4,355 vehicles a day, roughly 4% of them trucks, projected to reach 6,445 by 2043. The structure is 172 ft (52.4 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesUS 3 Nh 25
CrossesBaker River
Location4.3 MI FM Bridgewater Tl
RouteU.S. Route 3
CountyGrafton County
StateNew Hampshire
Coordinates43.76826, -71.68605
Functional classUrban 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.5 US tons
Inventory rating27.2 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length172 ft (52.4 m)
Longest span168 ft (51.2 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck12 ft (3.7 m)

Traffic and service

Average daily traffic4,355 (2023)
Projected traffic6,445 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible 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 US 3 Nh 25 over Baker River built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1985.

What condition is US 3 Nh 25 over Baker River 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 US 3 Nh 25 over Baker River carry?

About 4,355 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is US 3 Nh 25 over Baker River?

The structure is 172 ft (52.4 m) long with a longest span of 168 ft (51.2 m) and a deck 26 ft wide.

Who owns US 3 Nh 25 over Baker River?

It is owned by the State Highway Agency.