US Bridges

SR 28 over Coal Creek

Good

Lincoln County, Washington · 24.3 E JCT SR 21 · Structure no. 085840000000000

Built
1948
77 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
518
2023 count
Owner
State
State Highway Agency

About this bridge

SR 28 over Coal Creek is a concrete culvert carrying SR 28 over Coal Creek in Lincoln County, Washington. It was built in 1948, so it is 77 years old, older 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 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 518 vehicles a day, roughly 16% of them trucks, projected to reach 555 by 2039. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSR 28
CrossesCoal Creek
Location24.3 E JCT SR 21
RouteState Highway 28
Coordinates47.48447, -118.25558
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.8 US tons
Inventory rating48.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 15
Structure length24 ft (7.3 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic518 (2023)
Projected traffic555 by 2039
Trucks16%
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

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$456,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 28 over Coal Creek built?

It was built in 1948, making it 77 years old in 2025.

What condition is SR 28 over Coal 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 April 2023.

How much traffic does SR 28 over Coal Creek carry?

About 518 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is SR 28 over Coal Creek?

The structure is 24 ft (7.3 m) long with a longest span of 12 ft (3.7 m).

Who owns SR 28 over Coal Creek?

It is owned by the State Highway Agency.