US Bridges

Stearns Brook Road over Stearns Brook

Poor

Coos County, New Hampshire · 0.4 MI FR Success Tl · Structure no. 017002540003800

Built
1950
75 years old
Condition
Poor
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
39 ft
1 main span
Daily traffic
96
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Stearns Brook Road over Stearns Brook is a steel stringer/multi-beam or girder carrying Stearns Brook Road over Stearns Brook in Coos County, New Hampshire. It was built in 1950, so it is 75 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 poor condition with a lowest component rating of 2 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: open, temporary structure in place while original is closed.

It carries about 96 vehicles a day, projected to reach 142 by 2043. The structure is 39 ft (11.9 m) long and 16 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesStearns Brook Road
CrossesStearns Brook
Location0.4 MI FR Success Tl
Coordinates44.53169, -71.12737
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure2 CriticalAdvanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken.
Channel and channel protection2 CriticalAdvanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken.
Last inspectionOctober 2024
Inspection intervalevery 16 months
Operating statusOpen, temporary structure in place while original is closed
ScourScour critical; extensive scour has occurred
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating0 US tons
Inventory rating0 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length39 ft (11.9 m)
Longest span33 ft (10.1 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic96 (2023)
Projected traffic142 by 2043
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 Stearns Brook Road over Stearns Brook built?

It was built in 1950, making it 75 years old in 2025.

What condition is Stearns Brook Road over Stearns Brook in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does Stearns Brook Road over Stearns Brook carry?

About 96 vehicles per day (2023 count).

How long is Stearns Brook Road over Stearns Brook?

The structure is 39 ft (11.9 m) long with a longest span of 33 ft (10.1 m) and a deck 16 ft wide.

Who owns Stearns Brook Road over Stearns Brook?

It is owned by the City or Municipal Highway Agency.