US Bridges

Pierce Street over Ralston Creek

Fair

Jefferson County, Colorado · .14 MI North of 58th Ave · Structure no. ARVA-PE-0.14-01

Built
1974
51 years old
Condition
Fair
inspected May 2023
Type
Tee Beam
Prestressed Concrete
Length
61 ft
1 main span
Daily traffic
1,831
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Pierce Street over Ralston Creek is a prestressed concrete tee beam carrying Pierce Street over Ralston Creek in Jefferson County, Colorado. It was built in 1974, so it is 51 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.

It carries about 1,831 vehicles a day, roughly 4% of them trucks, projected to reach 2,106 by 2041. The structure is 61 ft (18.6 m) long and 54 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesPierce Street
CrossesRalston Creek
Location.14 MI North of 58th Ave
RouteCity Street 0
Coordinates39.80385, -105.0725
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length61 ft (18.6 m)
Longest span56 ft (17.1 m)
Deck width54 ft (16.5 m)
Roadway width44 ft (13.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,831 (2021)
Projected traffic2,106 by 2041
Trucks4%
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 Pierce Street over Ralston Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is Pierce Street over Ralston 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 May 2023.

How much traffic does Pierce Street over Ralston Creek carry?

About 1,831 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is Pierce Street over Ralston Creek?

The structure is 61 ft (18.6 m) long with a longest span of 56 ft (17.1 m) and a deck 54 ft wide.

Who owns Pierce Street over Ralston Creek?

It is owned by the City or Municipal Highway Agency.