US Bridges

FR-8403 over US-84/285 Nbl

Good

Santa Fe County, New Mexico · 1.93 MI N JCT ST Fran-Cer · Structure no. 000000000006487

Built
1964
61 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
118 ft
1 main span
Daily traffic
5,156
2023 count
Owner
State
State Highway Agency

About this bridge

FR-8403 over US-84/285 Nbl is a steel stringer/multi-beam or girder carrying FR-8403 over US-84/285 Nbl in Santa Fe County, New Mexico. It was built in 1964, so it is 61 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 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 5,156 vehicles a day, roughly 12% of them trucks, projected to reach 7,012 by 2043. The structure is 118 ft (36 m) long and 24 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesFR-8403
CrossesUS-84/285 Nbl
Location1.93 MI N JCT ST Fran-Cer
RouteCity Street 8403
CountySanta Fe County
StateNew Mexico
Coordinates35.69855, -105.952
Functional classUrban Other Principal Arterial

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.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating48.1 US tons
Inventory rating28.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length118 ft (36 m)
Longest span116 ft (35.4 m)
Deck width24 ft (7.3 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,156 (2023)
Projected traffic7,012 by 2043
Trucks12%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$400,000 (2030 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was FR-8403 over US-84/285 Nbl built?

It was built in 1964, making it 61 years old in 2025.

What condition is FR-8403 over US-84/285 Nbl 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 2023.

How much traffic does FR-8403 over US-84/285 Nbl carry?

About 5,156 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is FR-8403 over US-84/285 Nbl?

The structure is 118 ft (36 m) long with a longest span of 116 ft (35.4 m) and a deck 24 ft wide.

Who owns FR-8403 over US-84/285 Nbl?

It is owned by the State Highway Agency.