US Bridges

Oak Street over Uncompahgre River

Fair

Ouray County, Colorado · In City of Ouray · Structure no. OURAY-OAK-A ST

Built
1987
38 years old
Condition
Fair
inspected October 2023
Type
Tee Beam
Prestressed Concrete
Length
63 ft
1 main span
Daily traffic
445
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Oak Street over Uncompahgre River is a prestressed concrete tee beam carrying Oak Street over Uncompahgre River in Ouray County, Colorado. It was built in 1987, so it is 38 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 445 vehicles a day, projected to reach 489 by 2042. The structure is 63 ft (19.1 m) long and 23 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesOak Street
CrossesUncompahgre River
LocationIn City of Ouray
RouteCity Street 0
Coordinates38.01964, -107.67547
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadUnknown
Structure length63 ft (19.1 m)
Longest span57 ft (17.5 m)
Deck width23 ft (6.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic445 (2022)
Projected traffic489 by 2042
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$278,000 (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Oak Street over Uncompahgre River built?

It was built in 1987, making it 38 years old in 2025.

What condition is Oak Street over Uncompahgre 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 2023.

How much traffic does Oak Street over Uncompahgre River carry?

About 445 vehicles per day (2022 count).

How long is Oak Street over Uncompahgre River?

The structure is 63 ft (19.1 m) long with a longest span of 57 ft (17.5 m) and a deck 23 ft wide.

Who owns Oak Street over Uncompahgre River?

It is owned by the City or Municipal Highway Agency.