US Bridges

French Street over Blue River

Fair

Summit County, Colorado · Just West of Main ST · Structure no. BRECK-FRENCH

Built
1985
40 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Prestressed Concrete
Length
100 ft
2 main spans
Daily traffic
2,706
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

French Street over Blue River is a prestressed concrete tee beam carrying French Street over Blue River in Summit County, Colorado. It was built in 1985, so it is 40 years old, younger 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 2,706 vehicles a day, roughly 4% of them trucks, projected to reach 3,301 by 2041. The structure is 100 ft (30.5 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesFrench Street
CrossesBlue River
LocationJust West of Main ST
RouteCity Street 0
Coordinates39.48707, -106.04686
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.2 US tons
Inventory rating18 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span48 ft (14.5 m)
Deck width45 ft (13.6 m)
Roadway width37 ft (11.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,706 (2021)
Projected traffic3,301 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 French Street over Blue River built?

It was built in 1985, making it 40 years old in 2025.

What condition is French Street over Blue 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 September 2024.

How much traffic does French Street over Blue River carry?

About 2,706 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is French Street over Blue River?

The structure is 100 ft (30.5 m) long with a longest span of 48 ft (14.5 m) and a deck 45 ft wide.

Who owns French Street over Blue River?

It is owned by the City or Municipal Highway Agency.