US Bridges

Burton Highway over Burton Pond Outlet

Fair

Hillsborough County, New Hampshire · Town RD · Structure no. 027700830014300

Built
1920
105 years old, rebuilt 2005
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
23 ft
1 main span
Daily traffic
96
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Burton Highway over Burton Pond Outlet is a steel stringer/multi-beam or girder carrying Burton Highway over Burton Pond Outlet in Hillsborough County, New Hampshire. It was built in 1920 and reconstructed in 2005, so it is 105 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 96 vehicles a day, roughly 4% of them trucks, projected to reach 142 by 2043. The structure is 23 ft (7 m) long and 19 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesBurton Highway
CrossesBurton Pond Outlet
LocationTown RD
Coordinates42.85563, -71.78493
Functional classRural Local

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating42.1 US tons
Inventory rating31.7 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length23 ft (7 m)
Longest span21 ft (6.4 m)
Deck width19 ft (5.8 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic96 (2023)
Projected traffic142 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Burton Highway over Burton Pond Outlet built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 2005.

What condition is Burton Highway over Burton 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 July 2024.

How much traffic does Burton Highway over Burton Pond Outlet carry?

About 96 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Burton Highway over Burton Pond Outlet?

The structure is 23 ft (7 m) long with a longest span of 21 ft (6.4 m) and a deck 19 ft wide.

Who owns Burton Highway over Burton Pond Outlet?

It is owned by the City or Municipal Highway Agency.