US Bridges

S Jackson Street over E Harvard Gulch

Fair

Denver County, Colorado · Jackson ST N of East Yale · Structure no. D-13-HGE-280

Built
1967
58 years old
Condition
Fair
inspected December 2024
Type
Slab
Concrete
Length
33 ft
1 main span
Daily traffic
428
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

S Jackson Street over E Harvard Gulch is a concrete slab carrying S Jackson Street over E Harvard Gulch in Denver County, Colorado. It was built in 1967, so it is 58 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 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: open, posting recommended but not legally implemented.

It carries about 428 vehicles a day, roughly 2% of them trucks, projected to reach 475 by 2041. The structure is 33 ft (10 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesS Jackson Street
CrossesE Harvard Gulch
LocationJackson ST N of East Yale
RouteCity Street 0
Coordinates39.66923, -104.94309
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, posting recommended but not legally implemented
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.2 US tons
Inventory rating19.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length33 ft (10 m)
Longest span30 ft (9.1 m)
Deck width45 ft (13.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic428 (2021)
Projected traffic475 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 S Jackson Street over E Harvard Gulch built?

It was built in 1967, making it 58 years old in 2025.

What condition is S Jackson Street over E Harvard Gulch 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 December 2024.

How much traffic does S Jackson Street over E Harvard Gulch carry?

About 428 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is S Jackson Street over E Harvard Gulch?

The structure is 33 ft (10 m) long with a longest span of 30 ft (9.1 m) and a deck 45 ft wide.

Who owns S Jackson Street over E Harvard Gulch?

It is owned by the City or Municipal Highway Agency.