US Bridges

Fdr 13 over Cold Brook

Good

Coos County, New Hampshire · Map 02 · Structure no. 092202000001020

Built
2006
19 years old
Condition
Good
inspected October 2024
Type
Slab
Concrete
Length
26 ft
1 main span
Daily traffic
99
Owner
Federal
U.S. Forest Service

About this bridge

Fdr 13 over Cold Brook is a concrete slab carrying Fdr 13 over Cold Brook in Coos County, New Hampshire. It was built in 2006, so it is 19 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 99 vehicles a day, projected to reach 100 by 2021. The structure is 26 ft (7.9 m) long and 23 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesFdr 13
CrossesCold Brook
LocationMap 02
RouteFederal Lands Road 13
Coordinates44.50422, -71.33508
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating49.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length26 ft (7.9 m)
Longest span25 ft (7.6 m)
Deck width23 ft (7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic99 (—)
Projected traffic100 by 2021
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$306,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Fdr 13 over Cold Brook built?

It was built in 2006, making it 19 years old in 2025.

What condition is Fdr 13 over Cold Brook 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 October 2024.

How much traffic does Fdr 13 over Cold Brook carry?

About 99 vehicles per day (latest count).

How long is Fdr 13 over Cold Brook?

The structure is 26 ft (7.9 m) long with a longest span of 25 ft (7.6 m) and a deck 23 ft wide.

Who owns Fdr 13 over Cold Brook?

It is owned by the U.S. Forest Service.