US Bridges

Site 1 South Acces over Drainage Ditch

Good

Pima County, Arizona · Site 1 South Access Secur · Structure no. AF49ACHA0001310

Built
1954
71 years old
Condition
Good
inspected November 2023
Type
Culvert
Steel
Length
28 ft
5 main spans
Daily traffic
6,000
2017 count
Owner
Federal
Air Force

About this bridge

Site 1 South Acces over Drainage Ditch is a steel culvert carrying Site 1 South Acces over Drainage Ditch in Pima County, Arizona. It was built in 1954, so it is 71 years old, older than the Arizona average of 47.8 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 6,000 vehicles a day, projected to reach 7,200 by 2037. The structure is 28 ft (8.4 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSite 1 South Acces
CrossesDrainage Ditch
LocationSite 1 South Access Secur
CountyPima County
StateArizona
Coordinates32.09326, -110.94326
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans5
Design loadUnknown
Structure length28 ft (8.4 m)
Longest span4 ft (1.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,000 (2017)
Projected traffic7,200 by 2037
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerAir Force
Maintained byAir Force
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 Site 1 South Acces over Drainage Ditch built?

It was built in 1954, making it 71 years old in 2025.

What condition is Site 1 South Acces over Drainage 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 November 2023.

How much traffic does Site 1 South Acces over Drainage Ditch carry?

About 6,000 vehicles per day (2017 count).

How long is Site 1 South Acces over Drainage Ditch?

The structure is 28 ft (8.4 m) long with a longest span of 4 ft (1.2 m).

Who owns Site 1 South Acces over Drainage Ditch?

It is owned by the Air Force.