US Bridges

Old Military Road over Scatter CR

Good

Thurston County, Washington · 0.4 E of JCT 507 · Structure no. 086525000000000

Built
1999
26 years old
Condition
Good
inspected October 2023
Type
Slab
Prestressed Concrete
Length
28 ft
1 main span
Daily traffic
290
2019 count
Owner
County
County Highway Agency

About this bridge

Old Military Road over Scatter CR is a prestressed concrete slab carrying Old Military Road over Scatter CR in Thurston County, Washington. It was built in 1999, so it is 26 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 290 vehicles a day, roughly 15% of them trucks, projected to reach 448 by 2041. The structure is 28 ft (8.5 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesOld Military Road
CrossesScatter CR
Location0.4 E of JCT 507
RouteCounty Highway 13740
CountyThurston County
StateWashington
Coordinates46.86024, -122.83104
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating99 US tons
Inventory rating71 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span27 ft (8.2 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic290 (2019)
Projected traffic448 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 rehabilitation with only incidental widening
Estimated improvement cost$346,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Old Military Road over Scatter CR built?

It was built in 1999, making it 26 years old in 2025.

What condition is Old Military Road over Scatter CR 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 Old Military Road over Scatter CR carry?

About 290 vehicles per day (2019 count), of which roughly 15% are trucks.

How long is Old Military Road over Scatter CR?

The structure is 28 ft (8.5 m) long with a longest span of 27 ft (8.2 m) and a deck 24 ft wide.

Who owns Old Military Road over Scatter CR?

It is owned by the County Highway Agency.