PSI - Issue 84

Pasquale Bencivenga et al. / Procedia Structural Integrity 84 (2026) 264–271

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3. Accurate assessment prioritization 3.1. The considered bridges

The initial dataset considered in this study comprises 88 bridges located in the Campania region, representing a wide range of structural configurations. All bridges were assessed in accordance with the current Italian Guidelines. Approximately one-fourth of the structures, mainly due to the combined effect of multiple factors including poor conservation conditions, were assigned a High Attention Class and, consequently, underwent an in-depth structural safety assessment (Level 4). Only a limited portion of the inventory 3% fall within the Low or Medium-Low Attention Classes, whereas 40% and 31% are classified as Medium and Medium-High, respectively. From this subset, only a few bridges featuring masonry arch and statically indeterminate (hyperstatic) systems were excluded, so the analysis focused on reinforced and prestressed concrete decks. The study also considered bridges with a deck width of approximately 8 m, typical of regional and provincial road networks, resulting in a final sample of 50 representative structures. Their main geometrical and typological characteristics, together with the Attention Class and the I D and I C values, are reported in Table 1.

Table 1 – Geometrical and typological characteristics: total length (L tot ), maximum span length (L max ), number of spans, Attention Class, I D and I C

L tot [m]

L max [m]

Attention Class

L tot [m]

L max [m]

Attention Class

Spans

I D

Spans

I D

I C

d no.

I C

no.

1 125.00 30.00 5 2 30.00 30.00 1 3 29.15 29.15 1 4 11.80 11.80 1 5 30.00 30.00 1 6 52.80 24.40 3 7 57.90 30.70 2 8 115.65 29.30 4 9 95.80 30.00 3 10 102.90 28.50 5 11 301.90 30.20 10 12 35.00 35.00 1 13 75.00 35.00 2 14 341.90 34.65 10 15 260.80 32.60 8 16 260.80 32.60 8 17 3.95 3.95 1 18 100.35 34.70 3 19 295.70 26.75 11 20 101.70 35.17 3 21 253.40 30.50 8 22 472.50 30.15 15 23 189.20 17.10 10 24 61.90 21.00 3 25 60.40 30.27 2

26 54.00 17.58 3 27 317.10 28.20 10 28 55.50 29.80 3 29 38.90 18.95 2 30 641.50 35.60 18 31 29.15 29.15 1 33 13.70 13.70 1 34 954.00 33.00 29 35 60.93 29.00 2 36 61.40 30.00 2 37 327.00 38.10 8 38 93.00 32.00 3 39 36.80 13.53 2 41 1128.00 30.50 37 42 34.55 15.50 3 43 748.30 36.20 21 44 590.00 32.00 18 45 216.10 36.00 6 46 760.00 30.00 19 47 33.00 33.00 1 48 298.00 30.00 10 49 238.00 34.00 7 50 20.00 20.00 1 32 6.00 6.00 1 40 5.05 5.05 1

M 1.00 0.65 M-H 0.00 0.81 M 0.33 0.83 M-H 0.67 0.65 M-H 0.33 0.85 M 0.00 0.81 M 0.67 0.58 M 1.00 0.61 M-H 0.33 0.85 M-H 0.67 0.74 M-H 0.67 0.74 M-H 1.00 0.55 M 0.67 0.78 M-H 0.33 0.61 M-H 1.00 0.38 M-H 0.67 0.81 M-H 1.00 0.61 M-H 0.33 0.83 M 0.00 0.78 M 0.33 0.83 M-H 0.33 0.74 M-H 0.33 0.78 M 0.33 0.74 M-H 0.33 0.78 M 0.33 0.84

M 0.00 0.81 M 0.00 0.81 M 0.00 0.81 M 0.67 0.58 M 0.00 0.83 M 0.67 0.81 M-H 0.33 0.78 M 0.00 0.81 M-H 1.00 0.74 M 0.33 0.81 M-H 0.33 0.81 M-H 0.33 0.78 M 0.33 0.78 M 0.33 0.78 M-H 0.33 0.78 M-H 0.33 0.78 M-H 0.33 0.88 M 0.33 0.78 M 0.00 0.83 M 0.33 0.85 M-H 0.33 0.81 M 0.33 0.81 M 0.00 0.74 M-H 1.00 0.65 M 0.67 0.74