US Bridges

45-6100 over Coolidge Arroyo

Good

San Juan County, New Mexico · 4.39 MI E US-64/FRUITLAND · Structure no. 000000000009435

Built
2010
15 years old
Condition
Good
inspected May 2021
Type
Culvert
Concrete
Length
44 ft
1 main span
Daily traffic
1,729
2023 count
Owner
County
County Highway Agency

About this bridge

45-6100 over Coolidge Arroyo is a concrete culvert carrying 45-6100 over Coolidge Arroyo in San Juan County, New Mexico. It was built in 2010, so it is 15 years old, younger than the New Mexico average of 51.5 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 1,729 vehicles a day, roughly 5% of them trucks, projected to reach 2,351 by 2043. The structure is 44 ft (13.4 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries45-6100
CrossesCoolidge Arroyo
Location4.39 MI E US-64/FRUITLAND
RouteCounty Highway 45600
CountySan Juan County
StateNew Mexico
Coordinates36.73267, -108.34133
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionMay 2021
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length44 ft (13.4 m)
Longest span44 ft (13.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,729 (2023)
Projected traffic2,351 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$300,000 (2070 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 45-6100 over Coolidge Arroyo built?

It was built in 2010, making it 15 years old in 2025.

What condition is 45-6100 over Coolidge Arroyo 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 May 2021.

How much traffic does 45-6100 over Coolidge Arroyo carry?

About 1,729 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is 45-6100 over Coolidge Arroyo?

The structure is 44 ft (13.4 m) long with a longest span of 44 ft (13.4 m).

Who owns 45-6100 over Coolidge Arroyo?

It is owned by the County Highway Agency.