US Bridges

17-3068 over Griggs Canyon

FairPosted for load

Grant County, New Mexico · 0.06 MI S of JCT NM-35 · Structure no. 000000000008772

Built
1942
83 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
23 ft
1 main span
Daily traffic
191
2023 count
Owner
County
County Highway Agency

About this bridge

17-3068 over Griggs Canyon is a wood or timber stringer/multi-beam or girder carrying 17-3068 over Griggs Canyon in Grant County, New Mexico. It was built in 1942, so it is 83 years old, older than the New Mexico average of 51.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 191 vehicles a day, projected to reach 259 by 2043. The structure is 23 ft (6.9 m) long and 25 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
Carries17-3068
CrossesGriggs Canyon
Location0.06 MI S of JCT NM-35
RouteCounty Highway 17068
CountyGrant County
StateNew Mexico
Coordinates33.0332, -108.16823
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating23.4 US tons
Inventory rating12.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length23 ft (6.9 m)
Longest span21 ft (6.5 m)
Deck width25 ft (7.5 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic191 (2023)
Projected traffic259 by 2043
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$31,000 (2030 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was 17-3068 over Griggs Canyon built?

It was built in 1942, making it 83 years old in 2025.

What condition is 17-3068 over Griggs Canyon 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 March 2024.

How much traffic does 17-3068 over Griggs Canyon carry?

About 191 vehicles per day (2023 count).

How long is 17-3068 over Griggs Canyon?

The structure is 23 ft (6.9 m) long with a longest span of 21 ft (6.5 m) and a deck 25 ft wide.

Who owns 17-3068 over Griggs Canyon?

It is owned by the County Highway Agency.