US Bridges

Myrtle Street over Powder River

Good

Baker County, Oregon · 000 City of Baker · Structure no. 016843000000009

Built
1987
38 years old
Condition
Good
inspected June 2023
Type
Slab
Prestressed Concrete
Length
68 ft
1 main span
Daily traffic
1,777
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Myrtle Street over Powder River is a prestressed concrete slab carrying Myrtle Street over Powder River in Baker County, Oregon. It was built in 1987, so it is 38 years old, younger than the Oregon average of 49.9 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 1,777 vehicles a day, roughly 2% of them trucks, projected to reach 2,102 by 2025. The structure is 68 ft (20.7 m) long and 49 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMyrtle Street
CrossesPowder River
Location000 City of Baker
RouteCity Street 4830
StateOregon
Coordinates44.7695, -117.83183
Functional classUrban Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.9 US tons
Inventory rating76.1 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length68 ft (20.7 m)
Longest span67 ft (20.4 m)
Deck width49 ft (14.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,777 (2020)
Projected traffic2,102 by 2025
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Myrtle Street over Powder River built?

It was built in 1987, making it 38 years old in 2025.

What condition is Myrtle Street over Powder River 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 June 2023.

How much traffic does Myrtle Street over Powder River carry?

About 1,777 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Myrtle Street over Powder River?

The structure is 68 ft (20.7 m) long with a longest span of 67 ft (20.4 m) and a deck 49 ft wide.

Who owns Myrtle Street over Powder River?

It is owned by the City or Municipal Highway Agency.