US Bridges

Mottsville over Big Ditch

Fair

Douglas County, Nevada · Southwest of Minden · Structure no. B1491

Built
1976
49 years old
Condition
Fair
inspected May 2021
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
43 ft
1 main span
Daily traffic
3,800
2021 count
Owner
County
County Highway Agency

About this bridge

Mottsville over Big Ditch is a prestressed concrete stringer/multi-beam or girder carrying Mottsville over Big Ditch in Douglas County, Nevada. It was built in 1976, so it is 49 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 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 3,800 vehicles a day, roughly 3% of them trucks, projected to reach 5,400 by 2040. The structure is 43 ft (13.1 m) long and 49 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

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CarriesMottsville
CrossesBig Ditch
LocationSouthwest of Minden
RouteCounty Highway 0
CountyDouglas County
StateNevada
Coordinates38.93233, -119.82159
Functional classRural Major 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96.3 US tons
Inventory rating57.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length43 ft (13.1 m)
Longest span40 ft (12.2 m)
Deck width49 ft (14.9 m)
Roadway width45 ft (13.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,800 (2021)
Projected traffic5,400 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$365,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Mottsville over Big Ditch built?

It was built in 1976, making it 49 years old in 2025.

What condition is Mottsville over Big Ditch 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 May 2021.

How much traffic does Mottsville over Big Ditch carry?

About 3,800 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Mottsville over Big Ditch?

The structure is 43 ft (13.1 m) long with a longest span of 40 ft (12.2 m) and a deck 49 ft wide.

Who owns Mottsville over Big Ditch?

It is owned by the County Highway Agency.