US Bridges

Garrison Lane over Little River

Fair

Rockingham County, New Hampshire · 0.6MI RTE 111A · Structure no. 008200680008300

Built
1930
95 years old, rebuilt 2022
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
27 ft
1 main span
Daily traffic
13
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Garrison Lane over Little River is a steel stringer/multi-beam or girder carrying Garrison Lane over Little River in Rockingham County, New Hampshire. It was built in 1930 and reconstructed in 2022, so it is 95 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 13 vehicles a day, roughly 4% of them trucks, projected to reach 19 by 2043. The structure is 27 ft (8.2 m) long and 20 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesGarrison Lane
CrossesLittle River
Location0.6MI RTE 111A
CountyRockingham County
StateNew Hampshire
Coordinates42.98768, -70.97794
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating53.4 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length27 ft (8.2 m)
Longest span25 ft (7.6 m)
Deck width20 ft (6.1 m)
Roadway width16 ft (5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13 (2023)
Projected traffic19 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 Garrison Lane over Little River built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 2022.

What condition is Garrison Lane over Little River 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 Garrison Lane over Little River carry?

About 13 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Garrison Lane over Little River?

The structure is 27 ft (8.2 m) long with a longest span of 25 ft (7.6 m) and a deck 20 ft wide.

Who owns Garrison Lane over Little River?

It is owned by the City or Municipal Highway Agency.