US Bridges

US202 Nh 9 over Ash Brook

Poor

Merrimack County, New Hampshire · 1 MI from Currier RD · Structure no. 005201470002800

Built
1970
55 years old
Condition
Poor
inspected November 2024
Type
Culvert
Steel
Length
30 ft
3 main spans
Daily traffic
2,610
2023 count
Owner
State
State Highway Agency

About this bridge

US202 Nh 9 over Ash Brook is a steel culvert carrying US202 Nh 9 over Ash Brook in Merrimack County, New Hampshire. It was built in 1970, so it is 55 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 poor condition with a lowest component rating of 3 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.

It carries about 2,610 vehicles a day, roughly 4% of them trucks, projected to reach 3,862 by 2043. The structure is 30 ft (9.1 m) long.

CarriesUS202 Nh 9
CrossesAsh Brook
Location1 MI from Currier RD
RouteState Highway US202
Coordinates43.19331, -71.60425
Functional classRural Minor Arterial

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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionNovember 2024
Inspection intervalevery 8 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.2 US tons
Inventory rating21.6 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span6 ft (1.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,610 (2023)
Projected traffic3,862 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US202 Nh 9 over Ash Brook built?

It was built in 1970, making it 55 years old in 2025.

What condition is US202 Nh 9 over Ash 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 November 2024.

How much traffic does US202 Nh 9 over Ash Brook carry?

About 2,610 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is US202 Nh 9 over Ash Brook?

The structure is 30 ft (9.1 m) long with a longest span of 6 ft (1.8 m).

Who owns US202 Nh 9 over Ash Brook?

It is owned by the State Highway Agency.