ROUTE 101 NB
ROUTE 101 NB in 07-La-101-S1.28-La, Los Angeles County, California received a condition grade of C (56/100). Built in 1947, the bridge carries 140K vehicles daily on ROUTE 101 NB over Mission RD-E10 On-Ramp.
ROUTE 101 NB carries a C on the BridgeSafety Condition Score with 56/100. Component ratings sit in the middle of the FHWA NBI distribution; rehabilitation programming is likely on the owning agency’s medium-term horizon.
The bridge was built in 1947 and is now 79 years old, at or past the typical 50-year design life for bridges of its vintage. Maintenance and inspection cycles are correspondingly more involved than for newer structures. ROUTE 101 NB carries an average daily traffic count of 140,000 vehicles, with 2 lane(s) crossing Mission RD-E10 On-Ramp. The owning agency is State Highway Agency; bridge inspection records flow into the federal NBI database annually.
Component Ratings
The riding surface, evaluated for cracking, spalling, and wear
Beams, girders, and trusses that support the deck
Piers, abutments, and foundations below the deck
Bridge Details
About This Bridge
ROUTE 101 NB is a 79-year-old bridge located 07-La-101-S1.28-La in Los Angeles County, California. The bridge carries ROUTE 101 NB over Mission RD-E10 On-Ramp with 2 traffic lanes, handling approximately 140K vehicles per day. Built in 1947, the structure spans 32.9 meters.
The bridge received a Condition Grade of C (56/100) based on Federal Highway Administration inspection data. Its deck is rated 5/9 (fair), superstructure 7/9 (good), and substructure 7/9 (good).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
ROUTE 101 NB has a Condition Score of 56/100 (Grade C). Its deck is rated 5/9, superstructure 7/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
ROUTE 101 NB was built in 1947, making it 79 years old. The average bridge age in the United States is 48 years.
ROUTE 101 NB carries approximately 140K vehicles per day (average daily traffic). The bridge has 2 traffic lanes. It is 32.9 meters long and located on ROUTE 101 NB in 07-La-101-S1.28-La, Los Angeles County, California.
No, ROUTE 101 NB is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
ROUTE 101 NB is located 07-La-101-S1.28-La in Los Angeles County, California. The bridge carries ROUTE 101 NB over Mission RD-E10 On-Ramp. Its coordinates are 34.051997, -118.223819. It is maintained by State Highway Agency.
ROUTE 101 NB carries ROUTE 101 NB over Mission RD-E10 On-Ramp. The bridge is 32.9 meters long and was built in 1947.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.
Source: FHWA National Bridge Inventory, 2026.