US Bridges

Old Roxbury Road over Minnewawa Brook

Fair

Cheshire County, New Hampshire · 0.2 Mi. RTE.101 · Structure no. 016300880013300

Built
1932
93 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
38 ft
1 main span
Daily traffic
491
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Old Roxbury Road over Minnewawa Brook is a steel stringer/multi-beam or girder carrying Old Roxbury Road over Minnewawa Brook in Cheshire County, New Hampshire. It was built in 1932, so it is 93 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 491 vehicles a day, roughly 4% of them trucks, projected to reach 726 by 2043. The structure is 38 ft (11.6 m) long and 21 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesOld Roxbury Road
CrossesMinnewawa Brook
Location0.2 Mi. RTE.101
CountyCheshire County
StateNew Hampshire
Coordinates42.90879, -72.19472
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating25.2 US tons
Inventory rating18.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 10
Structure length38 ft (11.6 m)
Longest span32 ft (9.8 m)
Deck width21 ft (6.4 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic491 (2023)
Projected traffic726 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Old Roxbury Road over Minnewawa Brook built?

It was built in 1932, making it 93 years old in 2025.

What condition is Old Roxbury Road over Minnewawa 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 August 2024.

How much traffic does Old Roxbury Road over Minnewawa Brook carry?

About 491 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Old Roxbury Road over Minnewawa Brook?

The structure is 38 ft (11.6 m) long with a longest span of 32 ft (9.8 m) and a deck 21 ft wide.

Who owns Old Roxbury Road over Minnewawa Brook?

It is owned by the City or Municipal Highway Agency.