US Bridges

Alley over East Harvard Gulch

GoodPosted for load

Denver County, Colorado · Btwn Lafayette and Humb · Structure no. D-13-HGE-090

Built
1967
58 years old
Condition
Good
inspected November 2024
Type
Slab
Concrete
Length
29 ft
1 main span
Daily traffic
39
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Alley over East Harvard Gulch is a concrete slab carrying Alley over East 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 39 vehicles a day, projected to reach 43 by 2041. The structure is 29 ft (8.8 m) long and 19 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesAlley
CrossesEast Harvard Gulch
LocationBtwn Lafayette and Humb
RouteCity Street 0
Coordinates39.67125, -104.97055
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating19.1 US tons
Inventory rating11.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length29 ft (8.8 m)
Longest span26 ft (7.9 m)
Deck width19 ft (5.9 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic39 (2021)
Projected traffic43 by 2041
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
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 Alley over East Harvard Gulch built?

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

What condition is Alley over East Harvard Gulch 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 November 2024.

How much traffic does Alley over East Harvard Gulch carry?

About 39 vehicles per day (2021 count).

How long is Alley over East Harvard Gulch?

The structure is 29 ft (8.8 m) long with a longest span of 26 ft (7.9 m) and a deck 19 ft wide.

Who owns Alley over East Harvard Gulch?

It is owned by the City or Municipal Highway Agency.