US Bridges

N Armstrong Ave over Mill Ditch

Good

Fresno County, California · 0.4 MI North of Olive Ave · Structure no. 42C0613

Built
1996
29 years old, rebuilt 2022
Condition
Good
inspected March 2023
Type
Slab
Concrete Continuous
Length
54 ft
2 main spans
Daily traffic
1,800
2006 count
Owner
County
County Highway Agency

About this bridge

N Armstrong Ave over Mill Ditch is a concrete continuous slab carrying N Armstrong Ave over Mill Ditch in Fresno County, California. It was built in 1996 and reconstructed in 2022, so it is 29 years old, younger than the California average of 54.8 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 1,800 vehicles a day, roughly 5% of them trucks, projected to reach 2,149 by 2043. The structure is 54 ft (16.6 m) long and 82 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesN Armstrong Ave
CrossesMill Ditch
Location0.4 MI North of Olive Ave
RouteCounty Highway 0
Coordinates36.7648, -119.67308
Functional classUrban Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length54 ft (16.6 m)
Longest span26 ft (7.9 m)
Deck width82 ft (25 m)
Roadway width56 ft (17 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,800 (2006)
Projected traffic2,149 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N Armstrong Ave over Mill Ditch built?

It was built in 1996, making it 29 years old in 2025. It was reconstructed in 2022.

What condition is N Armstrong Ave over Mill Ditch 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 March 2023.

How much traffic does N Armstrong Ave over Mill Ditch carry?

About 1,800 vehicles per day (2006 count), of which roughly 5% are trucks.

How long is N Armstrong Ave over Mill Ditch?

The structure is 54 ft (16.6 m) long with a longest span of 26 ft (7.9 m) and a deck 82 ft wide.

Who owns N Armstrong Ave over Mill Ditch?

It is owned by the County Highway Agency.