US Bridges

Mira Loma over Steamboat Creek

Fair

Washoe County, Nevada · Steamboat · Structure no. B1953

Built
1991
34 years old, rebuilt 2018
Condition
Fair
inspected April 2022
Type
Culvert
Concrete
Length
51 ft
3 main spans
Daily traffic
14,600
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mira Loma over Steamboat Creek is a concrete culvert carrying Mira Loma over Steamboat Creek in Washoe County, Nevada. It was built in 1991 and reconstructed in 2018, so it is 34 years old, younger than the Nevada average of 36.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 14,600 vehicles a day, roughly 3% of them trucks, projected to reach 10,000 by 2040. The structure is 51 ft (15.5 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMira Loma
CrossesSteamboat Creek
LocationSteamboat
RouteCity Street 0
CountyWashoe County
StateNevada
Coordinates39.4848, -119.7375
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.2 US tons
Inventory rating54 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length51 ft (15.5 m)
Longest span16 ft (4.9 m)
Deck width44 ft (13.4 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,600 (2021)
Projected traffic10,000 by 2040
Trucks3%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mira Loma over Steamboat Creek built?

It was built in 1991, making it 34 years old in 2025. It was reconstructed in 2018.

What condition is Mira Loma over Steamboat Creek 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 April 2022.

How much traffic does Mira Loma over Steamboat Creek carry?

About 14,600 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Mira Loma over Steamboat Creek?

The structure is 51 ft (15.5 m) long with a longest span of 16 ft (4.9 m) and a deck 44 ft wide.

Who owns Mira Loma over Steamboat Creek?

It is owned by the City or Municipal Highway Agency.