US Bridges

US202 Nh 11 SP Tpk over Chestnut Hill Road

Good

Strafford County, New Hampshire · 2.9 MI S of Milton Tl · Structure no. 022201020009600

Built
1978
47 years old, rebuilt 2012
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
72 ft
1 main span
Daily traffic
15,397
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

US202 Nh 11 SP Tpk over Chestnut Hill Road is a steel stringer/multi-beam or girder carrying US202 Nh 11 SP Tpk over Chestnut Hill Road in Strafford County, New Hampshire. It was built in 1978 and reconstructed in 2012, so it is 47 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 good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 15,397 vehicles a day, roughly 8% of them trucks, projected to reach 22,787 by 2043. The structure is 72 ft (21.9 m) long and 113 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesUS202 Nh 11 SP Tpk
CrossesChestnut Hill Road
Location2.9 MI S of Milton Tl
RouteU.S. Route 202
CountyStrafford County
StateNew Hampshire
Coordinates43.32403, -70.98963
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93.6 US tons
Inventory rating56.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length72 ft (21.9 m)
Longest span67 ft (20.4 m)
Deck width113 ft (34.4 m)
Roadway width107 ft (32.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,397 (2023)
Projected traffic22,787 by 2043
Trucks8%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
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)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US202 Nh 11 SP Tpk over Chestnut Hill Road built?

It was built in 1978, making it 47 years old in 2025. It was reconstructed in 2012.

What condition is US202 Nh 11 SP Tpk over Chestnut Hill Road in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does US202 Nh 11 SP Tpk over Chestnut Hill Road carry?

About 15,397 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is US202 Nh 11 SP Tpk over Chestnut Hill Road?

The structure is 72 ft (21.9 m) long with a longest span of 67 ft (20.4 m) and a deck 113 ft wide.

Who owns US202 Nh 11 SP Tpk over Chestnut Hill Road?

It is owned by the State Toll Authority.