US Bridges

County Line Road over I 40; EB & WB

Fair

Coconino County, Arizona · 2.8 MI E JCT SR 89 · Structure no. 00844

Built
1965
60 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
266 ft
4 main spans
Daily traffic
100
2022 count
Owner
State
State Highway Agency

About this bridge

County Line Road over I 40; EB & WB is a steel continuous stringer/multi-beam or girder carrying County Line Road over I 40; EB & WB in Coconino County, Arizona. It was built in 1965, so it is 60 years old, older than the Arizona average of 47.8 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 100 vehicles a day, projected to reach 110 by 2042. The structure is 266 ft (81.1 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Line Road
CrossesI 40; EB & WB
Location2.8 MI E JCT SR 89
RouteCounty Highway 0
CountyCoconino County
StateArizona
Coordinates35.217, -112.4397
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating31 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length266 ft (81.1 m)
Longest span83 ft (25.3 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic110 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 County Line Road over I 40; EB & WB built?

It was built in 1965, making it 60 years old in 2025.

What condition is County Line Road over I 40; EB & WB 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 August 2023.

How much traffic does County Line Road over I 40; EB & WB carry?

About 100 vehicles per day (2022 count).

How long is County Line Road over I 40; EB & WB?

The structure is 266 ft (81.1 m) long with a longest span of 83 ft (25.3 m) and a deck 33 ft wide.

Who owns County Line Road over I 40; EB & WB?

It is owned by the State Highway Agency.