US Bridges

First Street over Mica Creek

Good

Spokane County, Washington · 0.1 N RR Grade Xng · Structure no. 087075000000000

Built
2003
22 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
79
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

First Street over Mica Creek is a prestressed concrete stringer/multi-beam or girder carrying First Street over Mica Creek in Spokane County, Washington. It was built in 2003, so it is 22 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 5% of them trucks, projected to reach 113 by 2046. The structure is 60 ft (18.3 m) long and 24 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesFirst Street
CrossesMica Creek
Location0.1 N RR Grade Xng
RouteCity Street 1100
Coordinates47.45399, -117.13274
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 protection7 GoodSome minor problems.
Last inspectionMay 2024
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating58.2 US tons
Inventory rating45 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length60 ft (18.3 m)
Longest span59 ft (18 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic79 (2024)
Projected traffic113 by 2046
Trucks5%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$741,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was First Street over Mica Creek built?

It was built in 2003, making it 22 years old in 2025.

What condition is First Street over Mica 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 May 2024.

How much traffic does First Street over Mica Creek carry?

About 79 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is First Street over Mica Creek?

The structure is 60 ft (18.3 m) long with a longest span of 59 ft (18 m) and a deck 24 ft wide.

Who owns First Street over Mica Creek?

It is owned by the City or Municipal Highway Agency.