Road over Black Rock Creek

Poor

Douglas County, Oregon · No Data Entered · Structure no. 061503000001476

Built: 1973; 52 years old
Condition: Poor; inspected November 2024
Type: Culvert; Steel
Length: 21 ft; 1 main span
Daily traffic: 5; 2012 count
Owner: Federal; U.S. Forest Service

About this bridge

Road over Black Rock Creek is a steel culvert carrying Road over Black Rock Creek in Douglas County, Oregon. It was built in 1973, so it is 52 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 2 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 5 vehicles a day, projected to reach 7 by 2045. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 620.7 mi (999 km).

Location

No coordinates are recorded for this structure.

CarriesRoad

CrossesBlack Rock Creek

LocationNo Data Entered

RouteFederal Lands Road 37020

CountyDouglas County

StateOregon

Functional classRural Local

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.

Component	Rating	Meaning
Channel and channel protection	6 Satisfactory	Structural elements show some minor deterioration.
Culvert	2 Critical	Advanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken.

Last inspectionNovember 2024

Inspection intervalevery 12 months

Operating statusOpen, no restriction

ScourScour critical; extensive scour has occurred

Structural evaluation*: *

Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is

Approach roadway alignment6: Equal to present minimum criteria

Operating rating—

Inventory rating—

Structure

Structure typeCulvert

MaterialSteel

DeckNot applicable

Main spans1

Design loadUnknown

Structure length21 ft (6.4 m)

Longest span21 ft (6.4 m)

Deck width0 ft (0 m)

Roadway width0 ft (0 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2012)

Projected traffic7 by 2045

Trucks—

Lanes on structure1

Traffic directionOne-lane bridge for two-way traffic

CarriesHighway

CrossesWaterway

Detour if closed620.7 mi (999 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 proposedNone recorded

Estimated improvement cost—

NavigationNo navigation control on waterway

Frequently asked questions

When was Road over Black Rock Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is Road over Black Rock Creek 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 Road over Black Rock Creek carry?

About 5 vehicles per day (2012 count).

How long is Road over Black Rock Creek?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m).

Who owns Road over Black Rock Creek?

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