US Bridges

Gilpin ST over East Harvard Gulch

FairPosted for load

Denver County, Colorado · Gilpin at Harvard Ave · Structure no. D-13-HGE-120

Built
1967
58 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete
Length
30 ft
1 main span
Daily traffic
295
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Gilpin ST over East Harvard Gulch is a concrete slab carrying Gilpin ST 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 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 295 vehicles a day, roughly 2% of them trucks, projected to reach 327 by 2041. The structure is 30 ft (9.1 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesGilpin ST
CrossesEast Harvard Gulch
LocationGilpin at Harvard Ave
RouteCity Street 0
Coordinates39.67121, -104.96761
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span28 ft (8.4 m)
Deck width45 ft (13.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic295 (2021)
Projected traffic327 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$26,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Gilpin ST over East Harvard Gulch built?

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

What condition is Gilpin ST over East 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 November 2024.

How much traffic does Gilpin ST over East Harvard Gulch carry?

About 295 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is Gilpin ST over East Harvard Gulch?

The structure is 30 ft (9.1 m) long with a longest span of 28 ft (8.4 m) and a deck 45 ft wide.

Who owns Gilpin ST over East Harvard Gulch?

It is owned by the City or Municipal Highway Agency.