US Bridges

Beech Street over Ralston Creek

Good

Jefferson County, Colorado · 0.3 MI South of 72nd Ave · Structure no. ARVA-68-0.30-01

Built
1978
47 years old
Condition
Good
inspected March 2025
Type
Slab
Concrete Continuous
Length
159 ft
4 main spans
Daily traffic
1,714
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Beech Street over Ralston Creek is a concrete continuous slab carrying Beech Street over Ralston Creek in Jefferson County, Colorado. It was built in 1978, so it is 47 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.

It carries about 1,714 vehicles a day, roughly 2% of them trucks, projected to reach 1,971 by 2041. The structure is 159 ft (48.5 m) long and 56 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesBeech Street
CrossesRalston Creek
Location0.3 MI South of 72nd Ave
RouteCity Street 0
Coordinates39.82293, -105.14958
Functional classUrban Collector

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 protection7 GoodSome minor problems.
Last inspectionMarch 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.2 US tons
Inventory rating30.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length159 ft (48.5 m)
Longest span40 ft (12.2 m)
Deck width56 ft (17 m)
Roadway width44 ft (13.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,714 (2021)
Projected traffic1,971 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 Beech Street over Ralston Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is Beech Street over Ralston Creek 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 March 2025.

How much traffic does Beech Street over Ralston Creek carry?

About 1,714 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is Beech Street over Ralston Creek?

The structure is 159 ft (48.5 m) long with a longest span of 40 ft (12.2 m) and a deck 56 ft wide.

Who owns Beech Street over Ralston Creek?

It is owned by the City or Municipal Highway Agency.