US Bridges

Red Water Brook RD over Red Water Brook

Fair

Sullivan County, New Hampshire · 0.9MI NH11 · Structure no. 004701080013600

Built
1925
100 years old, rebuilt 1981
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
25 ft
1 main span
Daily traffic
211
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Red Water Brook RD over Red Water Brook is a steel stringer/multi-beam or girder carrying Red Water Brook RD over Red Water Brook in Sullivan County, New Hampshire. It was built in 1925 and reconstructed in 1981, so it is 100 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 211 vehicles a day, roughly 4% of them trucks, projected to reach 312 by 2043. The structure is 25 ft (7.6 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesRed Water Brook RD
CrossesRed Water Brook
Location0.9MI NH11
RouteCity Street 0
Coordinates43.40262, -72.3587
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 protection7 GoodSome minor problems.
Last inspectionSeptember 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating34.4 US tons
Inventory rating25.2 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span21 ft (6.4 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic211 (2023)
Projected traffic312 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Red Water Brook RD over Red Water Brook built?

It was built in 1925, making it 100 years old in 2025. It was reconstructed in 1981.

What condition is Red Water Brook RD over Red Water Brook 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 September 2023.

How much traffic does Red Water Brook RD over Red Water Brook carry?

About 211 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Red Water Brook RD over Red Water Brook?

The structure is 25 ft (7.6 m) long with a longest span of 21 ft (6.4 m) and a deck 24 ft wide.

Who owns Red Water Brook RD over Red Water Brook?

It is owned by the City or Municipal Highway Agency.