US Bridges

County RD 11G over Two Mile Creek

FairPosted for load

Coos County, Oregon · 0390 Mile CO 11 from SH01 · Structure no. 11C13A001100390

Built
1985
40 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
71
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 11G over Two Mile Creek is a prestressed concrete tee beam carrying County RD 11G over Two Mile Creek in Coos County, Oregon. It was built in 1985, so it is 40 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 71 vehicles a day, roughly 1% of them trucks, projected to reach 80 by 2025. The structure is 40 ft (12.2 m) long and 20 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesCounty RD 11G
CrossesTwo Mile Creek
Location0390 Mile CO 11 from SH01
RouteCounty Highway C011G
StateOregon
Coordinates43.03702, -124.36389
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating33.1 US tons
Inventory rating25.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadH 20
Structure length40 ft (12.2 m)
Longest span39 ft (11.9 m)
Deck width20 ft (6.2 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic71 (2020)
Projected traffic80 by 2025
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$205,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 11G over Two Mile Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is County RD 11G over Two Mile 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 September 2024.

How much traffic does County RD 11G over Two Mile Creek carry?

About 71 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is County RD 11G over Two Mile Creek?

The structure is 40 ft (12.2 m) long with a longest span of 39 ft (11.9 m) and a deck 20 ft wide.

Who owns County RD 11G over Two Mile Creek?

It is owned by the County Highway Agency.