US Bridges

Gallup ST over Highline Canal

Fair

Arapahoe County, Colorado · 0.18 MI S of Geddes Ave · Structure no. LTND.911-03.830

Built
1962
63 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Prestressed Concrete
Length
63 ft
3 main spans
Daily traffic
255
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Gallup ST over Highline Canal is a prestressed concrete tee beam carrying Gallup ST over Highline Canal in Arapahoe County, Colorado. It was built in 1962, so it is 63 years old, older than the Colorado average of 42.2 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 255 vehicles a day, roughly 2% of them trucks, projected to reach 311 by 2041. The structure is 63 ft (19.2 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesGallup ST
CrossesHighline Canal
Location0.18 MI S of Geddes Ave
RouteCity Street 0
Coordinates39.58205, -105.00091
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating35.5 US tons
Inventory rating15.1 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length63 ft (19.2 m)
Longest span30 ft (9.1 m)
Deck width35 ft (10.6 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic255 (2021)
Projected traffic311 by 2041
Trucks2%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
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 Gallup ST over Highline Canal built?

It was built in 1962, making it 63 years old in 2025.

What condition is Gallup ST over Highline Canal 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 September 2023.

How much traffic does Gallup ST over Highline Canal carry?

About 255 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is Gallup ST over Highline Canal?

The structure is 63 ft (19.2 m) long with a longest span of 30 ft (9.1 m) and a deck 35 ft wide.

Who owns Gallup ST over Highline Canal?

It is owned by the City or Municipal Highway Agency.