US Bridges

Sisters Inter CO over US 97 (hwy 004)

Fair

Deschutes County, Oregon · Intx HWY 4 and 17 · Structure no. 17323 004 13496

Built
2001
24 years old
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
235 ft
1 main span
Daily traffic
7,019
2022 count
Owner
State
State Highway Agency

About this bridge

Sisters Inter CO over US 97 (hwy 004) is a prestressed concrete box beam or girders - multiple carrying Sisters Inter CO over US 97 (hwy 004) in Deschutes County, Oregon. It was built in 2001, so it is 24 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.

It carries about 7,019 vehicles a day, roughly 9% of them trucks, projected to reach 4,677 by 2030. The structure is 235 ft (71.6 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSisters Inter CO
CrossesUS 97 (hwy 004)
LocationIntx HWY 4 and 17
RouteU.S. Route 97
CountyDeschutes County
StateOregon
Coordinates44.0978, -121.302
Functional classUrban Other Principal Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: 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 typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length235 ft (71.6 m)
Longest span216 ft (65.8 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,019 (2022)
Projected traffic4,677 by 2030
Trucks9%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Sisters Inter CO over US 97 (hwy 004) built?

It was built in 2001, making it 24 years old in 2025.

What condition is Sisters Inter CO over US 97 (hwy 004) 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 March 2023.

How much traffic does Sisters Inter CO over US 97 (hwy 004) carry?

About 7,019 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is Sisters Inter CO over US 97 (hwy 004)?

The structure is 235 ft (71.6 m) long with a longest span of 216 ft (65.8 m) and a deck 29 ft wide.

Who owns Sisters Inter CO over US 97 (hwy 004)?

It is owned by the State Highway Agency.