US Bridges

I 80 over Highland Ditch (old)

Fair

Washoe County, Nevada · West of Reno · Structure no. B 127

Built
1938
87 years old, rebuilt 1964
Condition
Fair
inspected April 2024
Type
Culvert
Concrete
Length
44 ft
1 main span
Daily traffic
46,500
2021 count
Owner
State
State Highway Agency

About this bridge

I 80 over Highland Ditch (old) is a concrete culvert carrying I 80 over Highland Ditch (old) in Washoe County, Nevada. It was built in 1938 and reconstructed in 1964, so it is 87 years old, older 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 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 46,500 vehicles a day, roughly 16% of them trucks, projected to reach 50,500 by 2040. The structure is 44 ft (13.4 m) long. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI 80
CrossesHighland Ditch (old)
LocationWest of Reno
RouteInterstate 80
CountyWashoe County
StateNevada
Coordinates39.51137, -119.93253
Functional classUrban Principal Arterial - Interstate

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 protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.3 US tons
Inventory rating55.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length44 ft (13.4 m)
Longest span37 ft (11.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic46,500 (2021)
Projected traffic50,500 by 2040
Trucks16%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$287,000
NavigationNo navigation control on waterway

Frequently asked questions

When was I 80 over Highland Ditch (old) built?

It was built in 1938, making it 87 years old in 2025. It was reconstructed in 1964.

What condition is I 80 over Highland Ditch (old) 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 2024.

How much traffic does I 80 over Highland Ditch (old) carry?

About 46,500 vehicles per day (2021 count), of which roughly 16% are trucks.

How long is I 80 over Highland Ditch (old)?

The structure is 44 ft (13.4 m) long with a longest span of 37 ft (11.3 m).

Who owns I 80 over Highland Ditch (old)?

It is owned by the State Highway Agency.