US Bridges

Mcelfresh Road SW over Zeknor Creek

Good

Thurston County, Washington · 0.17 M W of Zenkner Vally · Structure no. 086188000000000

Built
1995
30 years old
Condition
Good
inspected October 2023
Type
Slab
Prestressed Concrete
Length
56 ft
1 main span
Daily traffic
79
2021 count
Owner
County
County Highway Agency

About this bridge

Mcelfresh Road SW over Zeknor Creek is a prestressed concrete slab carrying Mcelfresh Road SW over Zeknor Creek in Thurston County, Washington. It was built in 1995, so it is 30 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 79 vehicles a day, roughly 15% of them trucks, projected to reach 122 by 2041. The structure is 56 ft (17.1 m) long and 24 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesMcelfresh Road SW
CrossesZeknor Creek
Location0.17 M W of Zenkner Vally
RouteCounty Highway 13240
Coordinates46.77129, -122.94817
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating99 US tons
Inventory rating73 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length56 ft (17.1 m)
Longest span55 ft (16.8 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic79 (2021)
Projected traffic122 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedDeck replacement with only incidental widening
Estimated improvement cost$692,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mcelfresh Road SW over Zeknor Creek built?

It was built in 1995, making it 30 years old in 2025.

What condition is Mcelfresh Road SW over Zeknor 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 October 2023.

How much traffic does Mcelfresh Road SW over Zeknor Creek carry?

About 79 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is Mcelfresh Road SW over Zeknor Creek?

The structure is 56 ft (17.1 m) long with a longest span of 55 ft (16.8 m) and a deck 24 ft wide.

Who owns Mcelfresh Road SW over Zeknor Creek?

It is owned by the County Highway Agency.