US Bridges

Meridian RD over Antelope Creek

Good

Jackson County, Oregon · 1.07 Milepost · Structure no. 20178 510 00107

Built
2004
21 years old
Condition
Good
inspected June 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
79 ft
1 main span
Daily traffic
470
2020 count
Owner
County
County Highway Agency

About this bridge

Meridian RD over Antelope Creek is a prestressed concrete box beam or girders - multiple carrying Meridian RD over Antelope Creek in Jackson County, Oregon. It was built in 2004, so it is 21 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 470 vehicles a day, roughly 10% of them trucks, projected to reach 550 by 2025. The structure is 79 ft (24.1 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesMeridian RD
CrossesAntelope Creek
Location1.07 Milepost
RouteCounty Highway C0510
StateOregon
Coordinates42.43681, -122.75764
Functional classRural Local

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 within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.9 US tons
Inventory rating40.7 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length79 ft (24.1 m)
Longest span77 ft (23.6 m)
Deck width33 ft (10 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic470 (2020)
Projected traffic550 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Meridian RD over Antelope Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is Meridian RD over Antelope Creek 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 Meridian RD over Antelope Creek carry?

About 470 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Meridian RD over Antelope Creek?

The structure is 79 ft (24.1 m) long with a longest span of 77 ft (23.6 m) and a deck 33 ft wide.

Who owns Meridian RD over Antelope Creek?

It is owned by the County Highway Agency.