US Bridges

Anderson Hill ST over James Creek

Good

Boulder County, Colorado · 200 Ft South of Main Stre · Structure no. JMSTN-UPPER-A

Built
2016
9 years old
Condition
Good
inspected January 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
61 ft
1 main span
Daily traffic
117
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Anderson Hill ST over James Creek is a prestressed concrete box beam or girders - multiple carrying Anderson Hill ST over James Creek in Boulder County, Colorado. It was built in 2016, so it is 9 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 117 vehicles a day, roughly 9% of them trucks, projected to reach 140 by 2043. The structure is 61 ft (18.5 m) long and 23 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesAnderson Hill ST
CrossesJames Creek
Location200 Ft South of Main Stre
RouteCity Street 0
Coordinates40.11539, -105.38853
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable 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 rating57.1 US tons
Inventory rating42.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length61 ft (18.5 m)
Longest span55 ft (16.7 m)
Deck width23 ft (7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic117 (2023)
Projected traffic140 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Anderson Hill ST over James Creek built?

It was built in 2016, making it 9 years old in 2025.

What condition is Anderson Hill ST over James 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 January 2025.

How much traffic does Anderson Hill ST over James Creek carry?

About 117 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Anderson Hill ST over James Creek?

The structure is 61 ft (18.5 m) long with a longest span of 55 ft (16.7 m) and a deck 23 ft wide.

Who owns Anderson Hill ST over James Creek?

It is owned by the Town or Township Highway Agency.