US Bridges

Cross Road over Rocky Branch

Fair

Grafton County, New Hampshire · 0.6 MI FR No Dorchester · Structure no. 026901180006200

Built
2018
7 years old
Condition
Fair
inspected September 2023
Type
Culvert
Steel
Length
24 ft
2 main spans
Daily traffic
96
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Cross Road over Rocky Branch is a steel culvert carrying Cross Road over Rocky Branch in Grafton County, New Hampshire. It was built in 2018, so it is 7 years old, younger 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 96 vehicles a day, roughly 4% of them trucks, projected to reach 142 by 2043. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesCross Road
CrossesRocky Branch
Location0.6 MI FR No Dorchester
CountyGrafton County
StateNew Hampshire
Coordinates43.82689, -71.93924
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.3 US tons
Inventory rating33.7 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic96 (2023)
Projected traffic142 by 2043
Trucks4%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible 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 Cross Road over Rocky Branch built?

It was built in 2018, making it 7 years old in 2025.

What condition is Cross Road over Rocky Branch 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 Cross Road over Rocky Branch carry?

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

How long is Cross Road over Rocky Branch?

The structure is 24 ft (7.3 m) long with a longest span of 10 ft (3 m).

Who owns Cross Road over Rocky Branch?

It is owned by the City or Municipal Highway Agency.