US Bridges

Comb Street over Chase Creek

FairPosted for load

Greenlee County, Arizona · 50 Ft S JCT US 191T · Structure no. 09634

Built
1900
125 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
27 ft
2 main spans
Daily traffic
411
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Comb Street over Chase Creek is a steel stringer/multi-beam or girder carrying Comb Street over Chase Creek in Greenlee County, Arizona. It was built in 1900, so it is 125 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 411 vehicles a day, roughly 1% of them trucks, projected to reach 421 by 2041. The structure is 27 ft (8.2 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesComb Street
CrossesChase Creek
Location50 Ft S JCT US 191T
RouteCity Street 0
CountyGreenlee County
StateArizona
Coordinates33.0556, -109.309
Functional classRural Major Collector

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating22 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length27 ft (8.2 m)
Longest span10 ft (3 m)
Deck width27 ft (8.1 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deck18 ft (5.5 m)

Traffic and service

Average daily traffic411 (2021)
Projected traffic421 by 2041
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Comb Street over Chase Creek built?

It was built in 1900, making it 125 years old in 2025.

What condition is Comb Street over Chase Creek 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 July 2023.

How much traffic does Comb Street over Chase Creek carry?

About 411 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Comb Street over Chase Creek?

The structure is 27 ft (8.2 m) long with a longest span of 10 ft (3 m) and a deck 27 ft wide.

Who owns Comb Street over Chase Creek?

It is owned by the Town or Township Highway Agency.