US Bridges

Franklin ST over South Platte River

Fair

Denver County, Colorado · Franklin at Race Ct · Structure no. D-02-PR-010

Built
1965
60 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
310 ft
4 main spans
Daily traffic
2,765
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Franklin ST over South Platte River is a prestressed concrete stringer/multi-beam or girder carrying Franklin ST over South Platte River in Denver County, Colorado. It was built in 1965, so it is 60 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 2,765 vehicles a day, roughly 9% of them trucks, projected to reach 3,069 by 2041. The structure is 310 ft (94.6 m) long and 52 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesFranklin ST
CrossesSouth Platte River
LocationFranklin at Race Ct
RouteCity Street 0
Coordinates39.79055, -104.96896
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
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 geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.3 US tons
Inventory rating35.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length310 ft (94.6 m)
Longest span76 ft (23.3 m)
Deck width52 ft (15.8 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,765 (2021)
Projected traffic3,069 by 2041
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 Franklin ST over South Platte River built?

It was built in 1965, making it 60 years old in 2025.

What condition is Franklin ST over South Platte River 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 October 2024.

How much traffic does Franklin ST over South Platte River carry?

About 2,765 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is Franklin ST over South Platte River?

The structure is 310 ft (94.6 m) long with a longest span of 76 ft (23.3 m) and a deck 52 ft wide.

Who owns Franklin ST over South Platte River?

It is owned by the City or Municipal Highway Agency.