US Bridges

US 4 over Tewksbury Pond Outlet

Fair

Grafton County, New Hampshire · 2.0 MI SE Orange Tl · Structure no. 009901300012600

Built
1928
97 years old, rebuilt 2009
Condition
Fair
inspected May 2024
Type
Slab
Concrete
Length
23 ft
1 main span
Daily traffic
1,858
2023 count
Owner
State
State Highway Agency

About this bridge

US 4 over Tewksbury Pond Outlet is a concrete slab carrying US 4 over Tewksbury Pond Outlet in Grafton County, New Hampshire. It was built in 1928 and reconstructed in 2009, so it is 97 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 1,858 vehicles a day, roughly 7% of them trucks, projected to reach 2,749 by 2043. The structure is 23 ft (7 m) long and 36 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesUS 4
CrossesTewksbury Pond Outlet
Location2.0 MI SE Orange Tl
RouteU.S. Route 4
CountyGrafton County
StateNew Hampshire
Coordinates43.59709, -71.97091
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating64.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length23 ft (7 m)
Longest span20 ft (6.1 m)
Deck width36 ft (11.1 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,858 (2023)
Projected traffic2,749 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
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)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 4 over Tewksbury Pond Outlet built?

It was built in 1928, making it 97 years old in 2025. It was reconstructed in 2009.

What condition is US 4 over Tewksbury Pond Outlet 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 May 2024.

How much traffic does US 4 over Tewksbury Pond Outlet carry?

About 1,858 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is US 4 over Tewksbury Pond Outlet?

The structure is 23 ft (7 m) long with a longest span of 20 ft (6.1 m) and a deck 36 ft wide.

Who owns US 4 over Tewksbury Pond Outlet?

It is owned by the State Highway Agency.