US Bridges

Yelm HWY S.E. over Railroad

Fair

Thurston County, Washington · Lacey Cily Limit · Structure no. 080067000000000

Built
1951
74 years old
Condition
Fair
inspected May 2024
Type
Tee Beam
Concrete Continuous
Length
183 ft
3 main spans
Daily traffic
12,500
2020 count
Owner
County
County Highway Agency

About this bridge

Yelm HWY S.E. over Railroad is a concrete continuous tee beam carrying Yelm HWY S.E. over Railroad in Thurston County, Washington. It was built in 1951, so it is 74 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 12,500 vehicles a day, roughly 15% of them trucks, projected to reach 20,105 by 2042. The structure is 183 ft (55.8 m) long and 31 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesYelm HWY S.E.
CrossesRailroad
LocationLacey Cily Limit
RouteCounty Highway 15725
CountyThurston County
StateWashington
Coordinates46.99056, -122.79685
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37 US tons
Inventory rating22 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length183 ft (55.8 m)
Longest span84 ft (25.6 m)
Deck width31 ft (9.6 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,500 (2020)
Projected traffic20,105 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$999,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Yelm HWY S.E. over Railroad built?

It was built in 1951, making it 74 years old in 2025.

What condition is Yelm HWY S.E. over Railroad 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 May 2024.

How much traffic does Yelm HWY S.E. over Railroad carry?

About 12,500 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is Yelm HWY S.E. over Railroad?

The structure is 183 ft (55.8 m) long with a longest span of 84 ft (25.6 m) and a deck 31 ft wide.

Who owns Yelm HWY S.E. over Railroad?

It is owned by the County Highway Agency.