US Bridges

Nellie Gail Road over Narco Channel

Fair

Orange County, California · 0.1 MI S/O Oso Parkway · Structure no. 55C0495

Built
1979
46 years old
Condition
Fair
inspected June 2024
Type
Arch - Deck
Steel
Length
26 ft
1 main span
Daily traffic
2,700
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nellie Gail Road over Narco Channel is a steel arch - deck carrying Nellie Gail Road over Narco Channel in Orange County, California. It was built in 1979, so it is 46 years old, younger than the California average of 54.8 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 2,700 vehicles a day, roughly 1% of them trucks, projected to reach 4,630 by 2046. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNellie Gail Road
CrossesNarco Channel
Location0.1 MI S/O Oso Parkway
RouteCity Street 0
CountyOrange County
StateCalifornia
Coordinates33.57372, -117.69031
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
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 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 alignment6: Equal to present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeArch - Deck
MaterialSteel
DeckNot applicable
Main spans1
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span25 ft (7.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,700 (2019)
Projected traffic4,630 by 2046
Trucks1%
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

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nellie Gail Road over Narco Channel built?

It was built in 1979, making it 46 years old in 2025.

What condition is Nellie Gail Road over Narco Channel 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 June 2024.

How much traffic does Nellie Gail Road over Narco Channel carry?

About 2,700 vehicles per day (2019 count), of which roughly 1% are trucks.

How long is Nellie Gail Road over Narco Channel?

The structure is 26 ft (7.9 m) long with a longest span of 25 ft (7.6 m).

Who owns Nellie Gail Road over Narco Channel?

It is owned by the City or Municipal Highway Agency.