US Bridges

Big Bend Road over Parker Creek;morter Br

Fair

Boundary County, Idaho · 1.5 N. 4.8 W. Copeland · Structure no. 000000000030390

Built
1983
42 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
85 ft
3 main spans
Daily traffic
30
2023 count
Owner
County
County Highway Agency

About this bridge

Big Bend Road over Parker Creek;morter Br is a steel continuous stringer/multi-beam or girder carrying Big Bend Road over Parker Creek;morter Br in Boundary County, Idaho. It was built in 1983, so it is 42 years old, younger 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, roughly 50% of them trucks, projected to reach 45 by 2042. The structure is 85 ft (25.9 m) long and 18 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesBig Bend Road
CrossesParker Creek;morter Br
Location1.5 N. 4.8 W. Copeland
RouteCounty Highway 0
StateIdaho
Coordinates48.92633, -116.47889
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating81 US tons
Inventory rating58 US tons

Structure

MaterialSteel Continuous
DeckCorrugated steel
Main spans3
Design loadHS 15
Structure length85 ft (25.9 m)
Longest span34 ft (10.4 m)
Deck width18 ft (5.4 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2023)
Projected traffic45 by 2042
Trucks50%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$770,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Big Bend Road over Parker Creek;morter Br built?

It was built in 1983, making it 42 years old in 2025.

What condition is Big Bend Road over Parker Creek;morter Br 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 June 2024.

How much traffic does Big Bend Road over Parker Creek;morter Br carry?

About 30 vehicles per day (2023 count), of which roughly 50% are trucks.

How long is Big Bend Road over Parker Creek;morter Br?

The structure is 85 ft (25.9 m) long with a longest span of 34 ft (10.4 m) and a deck 18 ft wide.

Who owns Big Bend Road over Parker Creek;morter Br?

It is owned by the County Highway Agency.