US Bridges

Fdr 700 over Isabella Creek

Fair

Clearwater County, Idaho · 37 Miles from Pierce Id · Structure no. 010503000000057

Built
1962
63 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
51 ft
1 main span
Daily traffic
30
Owner
Federal
U.S. Forest Service

About this bridge

Fdr 700 over Isabella Creek is a wood or timber stringer/multi-beam or girder carrying Fdr 700 over Isabella Creek in Clearwater County, Idaho. It was built in 1962, so it is 63 years old, older than the Idaho average of 45.3 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 30 vehicles a day, projected to reach 45 by 2045. The structure is 51 ft (15.5 m) long and 15 ft wide.

CarriesFdr 700
CrossesIsabella Creek
Location37 Miles from Pierce Id
RouteFederal Lands Road 700
StateIdaho
Coordinates46.86295, -115.62164
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating39.7 US tons
Inventory rating30.8 US tons

Structure

MaterialWood or Timber
DeckAluminum
Main spans1
Design loadHS 25 or greater
Structure length51 ft (15.5 m)
Longest span49 ft (14.8 m)
Deck width15 ft (4.7 m)
Roadway width14 ft (4.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (—)
Projected traffic45 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Fdr 700 over Isabella Creek built?

It was built in 1962, making it 63 years old in 2025.

What condition is Fdr 700 over Isabella Creek 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 August 2023.

How much traffic does Fdr 700 over Isabella Creek carry?

About 30 vehicles per day (latest count).

How long is Fdr 700 over Isabella Creek?

The structure is 51 ft (15.5 m) long with a longest span of 49 ft (14.8 m) and a deck 15 ft wide.

Who owns Fdr 700 over Isabella Creek?

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