US Bridges

East Milan Road over Horne Brook

Fair

Coos County, New Hampshire · 0.98 MI Milan · Structure no. 002302680012000

Built
1932
93 years old, rebuilt 2008
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
36 ft
1 main span
Daily traffic
1,112
2023 count
Owner
State
State Highway Agency

About this bridge

East Milan Road over Horne Brook is a steel stringer/multi-beam or girder carrying East Milan Road over Horne Brook in Coos County, New Hampshire. It was built in 1932 and reconstructed in 2008, 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 1,112 vehicles a day, roughly 10% of them trucks, projected to reach 1,645 by 2043. The structure is 36 ft (11 m) long and 31 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

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CarriesEast Milan Road
CrossesHorne Brook
Location0.98 MI Milan
RouteState Highway 0
CountyCoos County
StateNew Hampshire
Coordinates44.51538, -71.15085
Functional classUrban Collector

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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionMay 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating65 US tons
Inventory rating38.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length36 ft (11 m)
Longest span30 ft (9.1 m)
Deck width31 ft (9.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,112 (2023)
Projected traffic1,645 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 East Milan Road over Horne Brook built?

It was built in 1932, making it 93 years old in 2025. It was reconstructed in 2008.

What condition is East Milan Road over Horne 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 May 2024.

How much traffic does East Milan Road over Horne Brook carry?

About 1,112 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is East Milan Road over Horne Brook?

The structure is 36 ft (11 m) long with a longest span of 30 ft (9.1 m) and a deck 31 ft wide.

Who owns East Milan Road over Horne Brook?

It is owned by the State Highway Agency.