US Bridges

IRR BIA RTE 103 over San Carlos River

Good

Graham County, Arizona · 3.7 KM S of San Carlos · Structure no. 00000000000H207

Built
1989
36 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
810 ft
7 main spans
Daily traffic
3,000
2024 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE 103 over San Carlos River is a prestressed concrete stringer/multi-beam or girder carrying IRR BIA RTE 103 over San Carlos River in Graham County, Arizona. It was built in 1989, so it is 36 years old, younger 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 3,000 vehicles a day, roughly 5% of them trucks, projected to reach 3,500 by 2044. The structure is 810 ft (246.9 m) long and 37 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesIRR BIA RTE 103
CrossesSan Carlos River
Location3.7 KM S of San Carlos
RouteFederal Lands Road 103
StateArizona
Coordinates33.32275, -110.44661
Functional classRural Major Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.8 US tons
Inventory rating43.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20 + Mod
Structure length810 ft (246.9 m)
Longest span116 ft (35.5 m)
Deck width37 ft (11.3 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,000 (2024)
Projected traffic3,500 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Indian Affairs
Maintained byBureau of Indian Affairs
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 IRR BIA RTE 103 over San Carlos River built?

It was built in 1989, making it 36 years old in 2025.

What condition is IRR BIA RTE 103 over San Carlos River 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 January 2024.

How much traffic does IRR BIA RTE 103 over San Carlos River carry?

About 3,000 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is IRR BIA RTE 103 over San Carlos River?

The structure is 810 ft (246.9 m) long with a longest span of 116 ft (35.5 m) and a deck 37 ft wide.

Who owns IRR BIA RTE 103 over San Carlos River?

It is owned by the Bureau of Indian Affairs.