US Bridges

45-5500 over San Juan River

Good

San Juan County, New Mexico · 0.80 MI S of JCT US 64 · Structure no. 000000000009835

Built
2022
3 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
205 ft
2 main spans
Daily traffic
3,063
2020 count
Owner
County
County Highway Agency

About this bridge

45-5500 over San Juan River is a concrete stringer/multi-beam or girder carrying 45-5500 over San Juan River in San Juan County, New Mexico. It was built in 2022, so it is 3 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,063 vehicles a day, roughly 21% of them trucks, projected to reach 2,632 by 2040. The structure is 205 ft (62.6 m) long and 49 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

Open in Google Maps
Carries45-5500
CrossesSan Juan River
Location0.80 MI S of JCT US 64
RouteCounty Highway 45500
CountySan Juan County
StateNew Mexico
Coordinates36.6894, -108.0957
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating45.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length205 ft (62.6 m)
Longest span141 ft (43 m)
Deck width49 ft (14.9 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,063 (2020)
Projected traffic2,632 by 2040
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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$347,000 (2030 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 45-5500 over San Juan River built?

It was built in 2022, making it 3 years old in 2025.

What condition is 45-5500 over San Juan River 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 June 2024.

How much traffic does 45-5500 over San Juan River carry?

About 3,063 vehicles per day (2020 count), of which roughly 21% are trucks.

How long is 45-5500 over San Juan River?

The structure is 205 ft (62.6 m) long with a longest span of 141 ft (43 m) and a deck 49 ft wide.

Who owns 45-5500 over San Juan River?

It is owned by the County Highway Agency.