US Bridges

IRR BIA RTE 6330 over Br Colorado River

Good

Coconino County, Arizona · 0.1KM East of RTE 6331 · Structure no. 0000N33780B0310

Built
2019
6 years old, rebuilt 9999
Condition
Good
inspected April 2023
Type
Culvert
Concrete
Length
77 ft
8 main spans
Daily traffic
500
2023 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE 6330 over Br Colorado River is a concrete culvert carrying IRR BIA RTE 6330 over Br Colorado River in Coconino County, Arizona. It was built in 2019 and reconstructed in 9999, so it is 6 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 500 vehicles a day, roughly 5% of them trucks, projected to reach 300 by 2043. The structure is 77 ft (23.6 m) long and 57 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesIRR BIA RTE 6330
CrossesBr Colorado River
Location0.1KM East of RTE 6331
RouteFederal Lands Road 6330
StateArizona
Coordinates36.60654, -111.07435
Functional classRural Minor Collector

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 protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.8 US tons
Inventory rating35.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans8
Design loadUnknown
Structure length77 ft (23.6 m)
Longest span8 ft (2.5 m)
Deck width57 ft (17.3 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2023)
Projected traffic300 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 6330 over Br Colorado River built?

It was built in 2019, making it 6 years old in 2025. It was reconstructed in 9999.

What condition is IRR BIA RTE 6330 over Br Colorado 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 April 2023.

How much traffic does IRR BIA RTE 6330 over Br Colorado River carry?

About 500 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is IRR BIA RTE 6330 over Br Colorado River?

The structure is 77 ft (23.6 m) long with a longest span of 8 ft (2.5 m) and a deck 57 ft wide.

Who owns IRR BIA RTE 6330 over Br Colorado River?

It is owned by the Bureau of Indian Affairs.