US Bridges

7th Avenue over SP RR Madison Jackson ST

Good

Maricopa County, Arizona · 7th Av S of Jefferson ST · Structure no. 09172

Built
1967
58 years old, rebuilt 1991
Condition
Good
inspected October 2022
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
1,279 ft
17 main spans
Daily traffic
26,936
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

7th Avenue over SP RR Madison Jackson ST is a concrete continuous box beam or girders - single or spread carrying 7th Avenue over SP RR Madison Jackson ST in Maricopa County, Arizona. It was built in 1967 and reconstructed in 1991, so it is 58 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 26,936 vehicles a day, roughly 5% of them trucks, projected to reach 26,946 by 2041. The structure is 1,279 ft (389.8 m) long and 76 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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Carries7th Avenue
CrossesSP RR Madison Jackson ST
Location7th Av S of Jefferson ST
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.4427, -112.0825
Functional classUrban Minor Arterial

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.
Last inspectionOctober 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating27.8 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans17 (+3 approach)
Design loadHS 20
Structure length1,279 ft (389.8 m)
Longest span75 ft (22.9 m)
Deck width76 ft (23.1 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,936 (2021)
Projected traffic26,946 by 2041
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
Detour if closed3.1 mi (5 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1,000 (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was 7th Avenue over SP RR Madison Jackson ST built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 1991.

What condition is 7th Avenue over SP RR Madison Jackson ST 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 October 2022.

How much traffic does 7th Avenue over SP RR Madison Jackson ST carry?

About 26,936 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is 7th Avenue over SP RR Madison Jackson ST?

The structure is 1,279 ft (389.8 m) long with a longest span of 75 ft (22.9 m) and a deck 76 ft wide.

Who owns 7th Avenue over SP RR Madison Jackson ST?

It is owned by the City or Municipal Highway Agency.