US Bridges

Fdr 298 & Bc 116 over North Boulder Creek

Fair

Boulder County, Colorado · 3.45 MI SW of CO HWY 72 · Structure no. 021001000001000

Built
1970
55 years old, rebuilt 1995
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
28 ft
1 main span
Daily traffic
40
1992 count
Owner
Federal
U.S. Forest Service

About this bridge

Fdr 298 & Bc 116 over North Boulder Creek is a wood or timber stringer/multi-beam or girder carrying Fdr 298 & Bc 116 over North Boulder Creek in Boulder County, Colorado. It was built in 1970 and reconstructed in 1995, so it is 55 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 40 vehicles a day, projected to reach 60 by 2045. The structure is 28 ft (8.5 m) long and 14 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

Location

Open in Google Maps
CarriesFdr 298 & Bc 116
CrossesNorth Boulder Creek
Location3.45 MI SW of CO HWY 72
RouteCounty Highway 116
CountyBoulder County
StateColorado
Coordinates40.01166, -105.55538
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating33.6 US tons
Inventory rating25.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 20
Structure length28 ft (8.5 m)
Longest span26 ft (7.9 m)
Deck width14 ft (4.3 m)
Roadway width13 ft (3.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (1992)
Projected traffic60 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Fdr 298 & Bc 116 over North Boulder Creek built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1995.

What condition is Fdr 298 & Bc 116 over North Boulder 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 September 2024.

How much traffic does Fdr 298 & Bc 116 over North Boulder Creek carry?

About 40 vehicles per day (1992 count).

How long is Fdr 298 & Bc 116 over North Boulder Creek?

The structure is 28 ft (8.5 m) long with a longest span of 26 ft (7.9 m) and a deck 14 ft wide.

Who owns Fdr 298 & Bc 116 over North Boulder Creek?

It is owned by the U.S. Forest Service and maintained by the County Highway Agency.