US Bridges

NH111A over Exeter River

Poor

Rockingham County, New Hampshire · 0.6 MI Danville T.L. · Structure no. 009001190006400

Built
1978
47 years old
Condition
Poor
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
79 ft
1 main span
Daily traffic
3,259
2023 count
Owner
State
State Highway Agency

About this bridge

NH111A over Exeter River is a steel stringer/multi-beam or girder carrying NH111A over Exeter River in Rockingham County, New Hampshire. It was built in 1978, 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 poor condition with a lowest component rating of 4 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 3,259 vehicles a day, roughly 10% of them trucks, projected to reach 4,823 by 2043. The structure is 79 ft (24.1 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNH111A
CrossesExeter River
Location0.6 MI Danville T.L.
RouteState Highway 111A
CountyRockingham County
StateNew Hampshire
Coordinates42.96638, -71.12072
Functional classRural Minor Collector

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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 8 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.9 US tons
Inventory rating31.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length79 ft (24.1 m)
Longest span75 ft (22.9 m)
Deck width32 ft (9.9 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,259 (2023)
Projected traffic4,823 by 2043
Trucks10%
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

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 NH111A over Exeter River built?

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

What condition is NH111A over Exeter River 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 NH111A over Exeter River carry?

About 3,259 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is NH111A over Exeter River?

The structure is 79 ft (24.1 m) long with a longest span of 75 ft (22.9 m) and a deck 32 ft wide.

Who owns NH111A over Exeter River?

It is owned by the State Highway Agency.