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Goodwill and Other Intangible Assets | 12 Months Ended
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Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill and Other Intangible Assets | Goodwill and Other Intangible Assets Goodwill Goodwill by segment is as follows:
| December 31, 2024 |  | December 31, 2023
| (in millions)
Construction Products | $ | 861.2 |  |  | $ | 516.1 |
Engineered Structures | 480.1 |  |  | 437.6 |
Transportation Products | 19.9 |  |  | 37.0 |
| $ | 1,361.2 |  |  | $ | 990.7 |
The increase in Construction Products goodwill during the year ended December 31, 2024 is primarily due to the acquisition of Stavola, partially offset by measurement period adjustments from the 2023 acquisitions and the divestiture of a single-location asphalt and paving business completed in April 2024. The increase in Engineered Structures goodwill during the year ended December 31, 2024 is due to the acquisition of Ameron. The decrease in Transportation Products goodwill during the year ended December 31, 2024 is due to the divestiture of the steel components business in August 2024. See Note 2 Acquisitions and Divestitures. Intangible Assets Intangibles, net consisted of the following:
|  |  |  | December 31, 2024 |  | December 31, 2023
|  |  |  | (in millions)
Intangibles with indefinite lives - Trademarks |  |  |  | $ | 43.8 |  |  | $ | 34.9 |
Intangibles with definite lives: |  |  |  |  |  |
Customer relationships |  |  |  | 169.1 |  | 142.7
Permits |  |  |  | 178.1 |  | 166.9
Other |  |  |  | 49.6 |  | 2.3
|  |  |  | 396.8 |  | 311.9
Less accumulated amortization |  |  |  | (102.3) |  | (76.1)
|  |  |  | 294.5 |  | 235.8
Intangible assets, net |  |  |  | $ | 338.3 |  |  | $ | 270.7 |
Total amortization expense from intangible assets was $26.3 million, $20.9 million, and $19.7 million for the years ended December 31, 2024, 2023 and 2022, respectively. Expected future amortization expense of intangibles as of December 31, 2024 is as follows:
| Amortization Expense
| (in millions)
2025 | $ | 26.7 |
2026 | 22.7 |
2027 | 20.5 |
2028 | 20.5 |
2029 | 20.1 |
Thereafter | 184.0 |

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-30/tableOfContent Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-20/tableOfContent + Details
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